How should we interpret CVSS severity scores?

CVSS estimates technical severity, but it does not automatically equal business risk. Prioritize using context like internet exposure, asset criticality, known exploitation, and whether compensating controls exist. A Medium CVSS on an exposed production system can be more urgent than a Critical on an isolated non-production host.

Vulnerability Database

Q: What is a Vulnerability (CVE) and why does it matter?

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

Q: What's the difference between a vulnerability, an exploit, and a zero-day?

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. Risk increases sharply when exploitation becomes reliable or widespread.

Q: Why do vulnerabilities keep reappearing in our environment?

Recurring findings usually come from incomplete asset discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host.

Q: How do we prioritize remediation without burning out the team?

Use a repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress so remediation is steady, not reactive.

Q: How can SynScan help reduce vulnerability risk over time?

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.

346,505

Total vulnerabilities in the database

Vulnerabilities for products matching "exchange_server"

Found 1 matching product.

You can search for specific versions with /product/exchange_server/1.2.3

microsoft / exchange_server

1403 vulnerabilities found

Title	Severity	Date	Affected Version
CVE-2022-21980	High	August 9, 2022 8/9/22	== 2013-cumulative_update_23 == 2016-cumulative_update_22 == 2019-cumulative_update_11 == 2019-cumulative_update_12 == 2016-cumulative_update_23
CVE-2022-24477	High	August 9, 2022 8/9/22	== 2013-cumulative_update_23 == 2016-cumulative_update_22 == 2019-cumulative_update_11 == 2019-cumulative_update_12 == 2016-cumulative_update_23
CVE-2022-24516	High	August 9, 2022 8/9/22	== 2013-cumulative_update_23 == 2016-cumulative_update_22 == 2019-cumulative_update_11 == 2019-cumulative_update_12 == 2016-cumulative_update_23
CVE-2022-30134	Medium	August 9, 2022 8/9/22	== 2013-cumulative_update_23 == 2016-cumulative_update_22 == 2019-cumulative_update_11 == 2019-cumulative_update_12 == 2016-cumulative_update_23
CVE-2022-21978	High	May 10, 2022 5/10/22	== 2013-cumulative_update_23 == 2016-cumulative_update_22 == 2019-cumulative_update_11 == 2019-cumulative_update_12 == 2016-cumulative_update_23
CVE-2022-24463	Medium	March 9, 2022 3/9/22	== 2016-cumulative_update_21 == 2019-cumulative_update_10 == 2016-cumulative_update_22 == 2019-cumulative_update_11
CVE-2022-23277	High	March 9, 2022 3/9/22	== 2013-cumulative_update_23 == 2016-cumulative_update_21 == 2019-cumulative_update_10 == 2016-cumulative_update_22 == 2019-cumulative_update_11
CVE-2022-21969	Critical	January 11, 2022 1/11/22	== 2013-cumulative_update_23 == 2016-cumulative_update_21 == 2019-cumulative_update_10 == 2016-cumulative_update_22 == 2019-cumulative_update_11
CVE-2022-21855	Critical	January 11, 2022 1/11/22	== 2013-cumulative_update_23 == 2016-cumulative_update_21 == 2019-cumulative_update_10 == 2016-cumulative_update_22 == 2019-cumulative_update_11
CVE-2022-21846	Critical	January 11, 2022 1/11/22	== 2013-cumulative_update_23 == 2016-cumulative_update_21 == 2019-cumulative_update_10 == 2016-cumulative_update_22 == 2019-cumulative_update_11
CVE-2021-42321	High	November 10, 2021 11/10/21	== 2016-cumulative_update_21 == 2019-cumulative_update_10 == 2016-cumulative_update_22 == 2019-cumulative_update_11
CVE-2021-42305	Medium	November 10, 2021 11/10/21	== 2013-cumulative_update_23 == 2016-cumulative_update_21 == 2019-cumulative_update_10 == 2016-cumulative_update_22 == 2019-cumulative_update_11
CVE-2021-41349	Medium	November 10, 2021 11/10/21	== 2013-cumulative_update_23 == 2016-cumulative_update_21 == 2019-cumulative_update_10 == 2016-cumulative_update_22 == 2019-cumulative_update_11
CVE-2021-41348	High	October 13, 2021 10/13/21	== 2016-cumulative_update_21 == 2019-cumulative_update_10 == 2016-cumulative_update_22 == 2019-cumulative_update_11
CVE-2021-41350	Medium	October 13, 2021 10/13/21	== 2016-cumulative_update_21 == 2019-cumulative_update_10 == 2016-cumulative_update_22 == 2019-cumulative_update_11
CVE-2021-26427	Critical	October 13, 2021 10/13/21	== 2013-cumulative_update_23 == 2016-cumulative_update_21 == 2019-cumulative_update_10 == 2016-cumulative_update_22 == 2019-cumulative_update_11
CVE-2021-34453	High	October 13, 2021 10/13/21	== 2016-cumulative_update_21 == 2019-cumulative_update_10 == 2016-cumulative_update_22 == 2019-cumulative_update_11
CVE-2021-34523	Critical	July 14, 2021 7/14/21	== 2013-cumulative_update_23 == 2019-cumulative_update_8 == 2016-cumulative_update_19 == 2016-cumulative_update_20 == 2019-cumulative_update_9
CVE-2021-34470	High	July 14, 2021 7/14/21	== 2013-cumulative_update_23 == 2016-cumulative_update_21 == 2019-cumulative_update_10
CVE-2021-34473	Critical	July 14, 2021 7/14/21	== 2013-cumulative_update_23 == 2019-cumulative_update_8 == 2016-cumulative_update_19 == 2016-cumulative_update_20 == 2019-cumulative_update_9
CVE-2021-33766	High	July 14, 2021 7/14/21	== 2013-cumulative_update_23 == 2019-cumulative_update_8 == 2016-cumulative_update_19 == 2016-cumulative_update_20 == 2019-cumulative_update_9
CVE-2021-33768	High	July 14, 2021 7/14/21	== 2016-cumulative_update_20 == 2019-cumulative_update_9 == 2016-cumulative_update_21 == 2019-cumulative_update_10
CVE-2021-31196	High	July 14, 2021 7/14/21	== 2013-cumulative_update_23 == 2016-cumulative_update_20 == 2019-cumulative_update_9 == 2016-cumulative_update_21 == 2019-cumulative_update_10
CVE-2021-31206	High	July 14, 2021 7/14/21	== 2013-cumulative_update_23 == 2016-cumulative_update_20 == 2019-cumulative_update_9 == 2016-cumulative_update_21 == 2019-cumulative_update_10
CVE-2021-31195	Medium	May 11, 2021 5/11/21	== 2013-cumulative_update_23 == 2019-cumulative_update_8 == 2016-cumulative_update_19 == 2016-cumulative_update_20 == 2019-cumulative_update_9
CVE-2021-31198	High	May 11, 2021 5/11/21	== 2013-cumulative_update_23 == 2019-cumulative_update_8 == 2016-cumulative_update_19 == 2016-cumulative_update_20 == 2019-cumulative_update_9
CVE-2021-31207	Medium	May 11, 2021 5/11/21	== 2013-cumulative_update_23 == 2019-cumulative_update_8 == 2016-cumulative_update_19 == 2016-cumulative_update_20 == 2019-cumulative_update_9
CVE-2021-31209	Medium	May 11, 2021 5/11/21	== 2013-cumulative_update_23 == 2019-cumulative_update_8 == 2016-cumulative_update_19 == 2016-cumulative_update_20 == 2019-cumulative_update_9
CVE-2021-28480	Critical	April 13, 2021 4/13/21	== 2013-cumulative_update_23 == 2019-cumulative_update_8 == 2016-cumulative_update_19 == 2016-cumulative_update_20 == 2019-cumulative_update_9
CVE-2021-28481	Critical	April 13, 2021 4/13/21	== 2013-cumulative_update_23 == 2019-cumulative_update_8 == 2016-cumulative_update_19 == 2016-cumulative_update_20 == 2019-cumulative_update_9
CVE-2021-28482	High	April 13, 2021 4/13/21	== 2013-cumulative_update_23 == 2019-cumulative_update_8 == 2016-cumulative_update_19 == 2016-cumulative_update_20 == 2019-cumulative_update_9
CVE-2021-28483	Critical	April 13, 2021 4/13/21	== 2013-cumulative_update_23 == 2019-cumulative_update_8 == 2016-cumulative_update_19 == 2016-cumulative_update_20 == 2019-cumulative_update_9
CVE-2021-26854	Medium	March 3, 2021 3/3/21	== 2013-cumulative_update_23 == 2019-cumulative_update_7 == 2016-cumulative_update_18 == 2019-cumulative_update_8 == 2016-cumulative_update_19
CVE-2021-26855	Critical	March 3, 2021 3/3/21	== 2016-cumulative_update_8 == 2016-cumulative_update_9 == 2013-cumulative_update_21 == 2016-cumulative_update_10 == 2016-cumulative_update_11 == 2013-cumulative_update_22 == 2016-cumulative_update_12 == 2019-cumulative_update_1 == 2013-cumulative_update_23 == 2016-cumulative_update_13 == 2019-cumulative_update_2 == 2016-cumulative_update_14 == 2019-cumulative_update_3 == 2019-cumulative_update_4 == 2016-cumulative_update_15 == 2019 == 2019-cumulative_update_6 == 2019-cumulative_update_5 == 2016-cumulative_update_17 == 2016-cumulative_update_16 == 2019-cumulative_update_7 == 2016-cumulative_update_18 == 2019-cumulative_update_8 == 2016-cumulative_update_19
CVE-2021-26857	High	March 3, 2021 3/3/21	== 2010-sp3 == 2013-cumulative_update_23 == 2019-cumulative_update_7 == 2016-cumulative_update_18 == 2019-cumulative_update_8 == 2016-cumulative_update_19 == 2013-sp1 == 2016-cumulative_update_8 == 2016-cumulative_update_9 == 2016-cumulative_update_10 == 2016-cumulative_update_11 == 2013-cumulative_update_22 == 2016-cumulative_update_12 == 2019-cumulative_update_1 == 2016-cumulative_update_13 == 2019-cumulative_update_2 == 2016-cumulative_update_14 == 2019-cumulative_update_3 == 2019-cumulative_update_4 == 2016-cumulative_update_15 == 2019 == 2019-cumulative_update_6 == 2019-cumulative_update_5 == 2016-cumulative_update_17 == 2016-cumulative_update_16
CVE-2021-26858	High	March 3, 2021 3/3/21	== 2013-cumulative_update_23 == 2019-cumulative_update_7 == 2016-cumulative_update_18 == 2019-cumulative_update_8 == 2016-cumulative_update_19 == 2010-sp3 == 2013-sp1 == 2016-cumulative_update_8 == 2016-cumulative_update_9 == 2016-cumulative_update_10 == 2016-cumulative_update_11 == 2013-cumulative_update_22 == 2016-cumulative_update_12 == 2019-cumulative_update_1 == 2016-cumulative_update_13 == 2019-cumulative_update_2 == 2016-cumulative_update_14 == 2019-cumulative_update_3 == 2019-cumulative_update_4 == 2016-cumulative_update_15 == 2019 == 2019-cumulative_update_6 == 2019-cumulative_update_5 == 2016-cumulative_update_17 == 2016-cumulative_update_16
CVE-2021-27065	High	March 3, 2021 3/3/21	== 2013-sp1 == 2016-cumulative_update_8 == 2016-cumulative_update_10 == 2016-cumulative_update_11 == 2016-cumulative_update_12 == 2019-cumulative_update_1 == 2016-cumulative_update_13 == 2019-cumulative_update_2 == 2016-cumulative_update_14 == 2019-cumulative_update_4 == 2016-cumulative_update_15 == 2019 == 2019-cumulative_update_6 == 2019-cumulative_update_5 == 2016-cumulative_update_17 == 2016-cumulative_update_16 == 2019-cumulative_update_7 == 2016-cumulative_update_18 == 2019-cumulative_update_8 == 2016-cumulative_update_19 == 2013-cumulative_update_21 == 2019-cumulative_update_3
CVE-2021-27078	Critical	March 3, 2021 3/3/21	== 2013-cumulative_update_23 == 2019-cumulative_update_7 == 2016-cumulative_update_18 == 2019-cumulative_update_8 == 2016-cumulative_update_19
CVE-2021-26412	Critical	March 3, 2021 3/3/21	== 2013-cumulative_update_23 == 2019-cumulative_update_7 == 2016-cumulative_update_18 == 2019-cumulative_update_8 == 2016-cumulative_update_19
CVE-2021-24085	Medium	February 25, 2021 2/25/21	== 2019-cumulative_update_7 == 2016-cumulative_update_18 == 2019-cumulative_update_8 == 2016-cumulative_update_19
CVE-2021-1730	Medium	February 25, 2021 2/25/21	== 2019-cumulative_update_7 == 2016-cumulative_update_18
CVE-2020-17143	High	December 10, 2020 12/10/20	== 2013-cumulative_update_23 == 2019-cumulative_update_6 == 2016-cumulative_update_17 == 2019-cumulative_update_7 == 2016-cumulative_update_18
CVE-2020-17144	High	December 10, 2020 12/10/20	== 2010-sp3_rollup_31
CVE-2020-17132	Critical	December 10, 2020 12/10/20	== 2013-cumulative_update_23 == 2019-cumulative_update_6 == 2016-cumulative_update_17 == 2019-cumulative_update_7 == 2016-cumulative_update_18
CVE-2020-17141	High	December 10, 2020 12/10/20	== 2019-cumulative_update_6 == 2016-cumulative_update_17 == 2019-cumulative_update_7 == 2016-cumulative_update_18
CVE-2020-17142	Critical	December 10, 2020 12/10/20	== 2013-cumulative_update_23 == 2019-cumulative_update_6 == 2016-cumulative_update_17 == 2019-cumulative_update_7 == 2016-cumulative_update_18
CVE-2020-17117	Medium	December 10, 2020 12/10/20	== 2013-cumulative_update_23 == 2019-cumulative_update_6 == 2016-cumulative_update_17 == 2019-cumulative_update_7 == 2016-cumulative_update_18
CVE-2020-17083	Medium	November 11, 2020 11/11/20	== 2013-cumulative_update_23 == 2019-cumulative_update_6 == 2016-cumulative_update_17 == 2019-cumulative_update_7 == 2016-cumulative_update_18
CVE-2020-17084	High	November 11, 2020 11/11/20	== 2013-cumulative_update_23 == 2019-cumulative_update_6 == 2016-cumulative_update_17 == 2019-cumulative_update_7 == 2016-cumulative_update_18
CVE-2020-17085	Medium	November 11, 2020 11/11/20	== 2013-cumulative_update_23 == 2019-cumulative_update_6 == 2016-cumulative_update_17 == 2019-cumulative_update_7 == 2016-cumulative_update_18

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Frequently Asked Questions

What is a Vulnerability (CVE) and why does it matter?

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.