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.

328,409

Total vulnerabilities in the database

Vulnerabilities for products matching "nginx"

Found 1 matching product.

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

f5 / nginx

41 vulnerabilities found

Title	Severity	Date	Affected Version
CVE-2025-23419	Low	February 5, 2025 2/5/25	>= 1.11.4 < 1.26.3 >= 1.27.0 < 1.27.4
CVE-2023-44487	High	October 10, 2023 10/10/23	>= 1.9.5 <= 1.25.2
CVE-2022-41741	High	October 19, 2022 10/19/22	>= r22 <= r27 == 1.23.1 == 1.23.0 >= 1.1.3 <= 1.22.0 == r2 == r1
CVE-2022-41742	High	October 19, 2022 10/19/22	>= r22 <= r27 == 1.23.1 == 1.23.0 >= 1.1.3 <= 1.22.0 == r2 == r1
CVE-2021-3618	High	March 23, 2022 3/23/22	< 1.21.0
CVE-2017-20005	Critical	June 6, 2021 6/6/21	< 1.13.6
CVE-2021-23017	High	June 1, 2021 6/1/21	>= 0.6.18 < 1.20.1
CVE-2019-20372	Medium	January 9, 2020 1/9/20	< 1.17.7
CVE-2011-4968	Low	November 19, 2019 11/19/19	== 0.7.65 == 0.7.66 == 0.7.64 == 0.7.61 == 0.7.62 == 0.8.33 == 0.8.40 == 0.8.35 == 0.8.36 == 1.2.6
CVE-2019-9511	High	August 13, 2019 8/13/19	>= 1.9.5 < 1.16.1 >= 1.17.0 <= 1.17.2
CVE-2019-9513	High	August 13, 2019 8/13/19	>= 1.9.5 < 1.16.1 >= 1.17.0 <= 1.17.2
CVE-2019-9516	Medium	August 13, 2019 8/13/19	>= 1.9.5 < 1.16.1 >= 1.17.0 <= 1.17.2
CVE-2018-16843	High	November 7, 2018 11/7/18	>= 1.9.5.x < 1.14.1 >= 1.15.0.x < 1.15.6
CVE-2018-16844	High	November 7, 2018 11/7/18	>= 1.9.5 < 1.14.1 >= 1.15.0 < 1.15.6
CVE-2018-16845	Medium	November 7, 2018 11/7/18	>= 1.0.7 <= 1.0.15 >= 1.1.3 <= 1.15.5
CVE-2017-7529	High	July 13, 2017 7/13/17	>= 0.5.6 <= 1.12.1 >= 1.13.0 <= 1.13.2
CVE-2016-1247	High	November 29, 2016 11/29/16	<= 1.10.1 <= 1.10.0 <= 1.6.2 <= 1.4.3
CVE-2016-4450	High	June 7, 2016 6/7/16	>= 1.3.9 < 1.10.1 == 1.11.0
CVE-2016-0747	Medium	February 15, 2016 2/15/16	>= 0.6.18 < 1.8.1 >= 1.9.0 < 1.9.10
CVE-2016-0746	Critical	February 15, 2016 2/15/16	>= 1.9.0 < 1.9.10 >= 0.6.18 <= 1.8.0
CVE-2016-0742	High	February 15, 2016 2/15/16	>= 0.6.18 < 1.8.1 >= 1.9.0 < 1.9.10
CVE-2014-3556	Medium	December 29, 2014 12/29/14	>= 1.7.0 < 1.7.4 >= 1.5.6 < 1.6.1
CVE-2014-3616	Low	December 8, 2014 12/8/14	>= 1.7.0 < 1.7.5 >= 0.5.6 < 1.6.2
CVE-2014-0088	High	April 29, 2014 4/29/14	== 1.5.10
CVE-2014-0133	High	March 28, 2014 3/28/14	>= 1.3.15 < 1.4.7 >= 1.5.0 <= 1.5.11
CVE-2013-4547	High	November 23, 2013 11/23/13	>= 0.8.41 < 1.4.4 >= 1.5.0 <= 1.5.6
CVE-2013-0337	High	October 27, 2013 10/27/13	== 1.0.11 == 1.0.12 == 1.0.13 == 1.0.14 == 1.0.0 == 1.0.1 == 1.0.10 == 1.0.5 == 1.0.6 == 1.0.7 == 1.0.8 == 1.0.15 == 1.0.2 == 1.0.3 == 1.0.4 == 1.1.11 == 1.1.12 == 1.1.13 == 1.0.9 == 1.1.0 == 1.1.1 == 1.1.10 == 1.1.2 == 1.1.3 == 1.1.4 == 1.1.9 == 1.1.5 == 1.1.6 == 1.1.7 == 1.1.8 == 1.1.14 <= 1.3.13 == 1.1.19 == 1.1.15 == 1.1.16 == 1.1.17 == 1.1.18 == 1.2.0 == 1.3.0 == 1.3.1 == 1.3.2 == 1.3.10 == 1.3.11 == 1.3.12 == 1.3.7 == 1.3.8 == 1.3.9 == 1.3.3 == 1.3.4 == 1.3.5 == 1.3.6
CVE-2013-2070	Medium	July 20, 2013 7/20/13	>= 1.1.4 <= 1.2.8 >= 1.3.9 <= 1.4.0
CVE-2013-2028	High	July 20, 2013 7/20/13	>= 1.3.9 <= 1.4.0
CVE-2011-4963	Medium	July 26, 2012 7/26/12	>= 0.7.52 < 1.2.1 == 1.3.0
CVE-2012-1180	Medium	April 17, 2012 4/17/12	>= 0.1.0 < 1.0.14 >= 1.1.0 < 1.1.17
CVE-2012-2089	Medium	April 17, 2012 4/17/12	>= 1.0.7 <= 1.0.14 >= 1.1.3 <= 1.1.18
CVE-2011-4315	Medium	December 8, 2011 12/8/11	>= 0.6.18 < 1.0.10 >= 1.1.0 <= 1.1.7
CVE-2010-4180	Low	December 6, 2010 12/6/10	< 0.9.2
CVE-2010-2263	Medium	June 15, 2010 6/15/10	>= 0.7.52 < 0.7.66 >= 0.8.0 <= 0.8.39
CVE-2010-2266	Medium	June 15, 2010 6/15/10	>= 0.7.52 < 0.7.67 >= 0.8.0 <= 0.8.40
CVE-2009-4487	Medium	January 13, 2010 1/13/10	== 0.7.64
CVE-2009-3896	Medium	November 24, 2009 11/24/09	== 0.6.1516 == 0.1.0 == 0.1.1 == 0.1.8 == 0.1.9 == 0.1.6 == 0.1.7 == 0.1.4 == 0.1.5 == 0.1.2 == 0.1.3 == 0.1.16 == 0.1.17 == 0.1.14 == 0.1.15 == 0.1.12 == 0.1.13 == 0.1.10 == 0.1.11 == 0.1.24 == 0.1.25 == 0.1.22 == 0.1.23 == 0.1.20 == 0.1.21 == 0.1.18 == 0.1.19 == 0.1.32 == 0.1.33 == 0.1.30 == 0.1.31 == 0.1.28 == 0.1.29 == 0.1.26 == 0.1.27 == 0.1.40 == 0.1.41 == 0.1.38 == 0.1.39 == 0.1.36 == 0.1.37 == 0.1.34 == 0.1.35 == 0.2.2 == 0.2.3 == 0.2.0 == 0.2.1 == 0.1.44 == 0.1.45 == 0.1.42 == 0.1.43 == 0.3.3 == 0.3.4 == 0.3.1 == 0.3.2 == 0.2.6 == 0.3.0 == 0.2.4 == 0.2.5 == 0.3.11 == 0.3.12 == 0.3.9 == 0.3.10 == 0.3.7 == 0.3.8 == 0.3.5 == 0.3.6 == 0.3.19 == 0.3.20 == 0.3.17 == 0.3.18 == 0.3.15 == 0.3.16 == 0.3.13 == 0.3.14 == 0.3.27 == 0.3.28 == 0.3.25 == 0.3.26 == 0.3.23 == 0.3.24 == 0.3.21 == 0.3.22 == 0.3.35 == 0.3.36 == 0.3.33 == 0.3.34 == 0.3.31 == 0.3.32 == 0.3.29 == 0.3.30 == 0.3.43 == 0.3.44 == 0.3.41 == 0.3.42 == 0.3.39 == 0.3.40 == 0.3.37 == 0.3.38 == 0.3.51 == 0.3.52 == 0.3.49 == 0.3.50 == 0.3.47 == 0.3.48 == 0.3.45 == 0.3.46 == 0.3.59 == 0.3.60 == 0.3.57 == 0.3.58 == 0.3.55 == 0.3.56 == 0.3.53 == 0.3.54 == 0.4.1 == 0.3.61 == 0.4.0 == 0.4.5 == 0.4.6 == 0.4.3 == 0.4.4 == 0.4.2 == 0.4.7 == 0.4.8 == 0.4.13 == 0.4.11 == 0.4.12 == 0.4.9 == 0.4.10 == 0.5.6 == 0.5.7 == 0.5.4 == 0.5.5 == 0.5.2 == 0.5.3 == 0.5.0 == 0.5.1 == 0.5.12 == 0.5.10 == 0.5.11 == 0.5.8 == 0.5.9 == 0.5.20 == 0.5.21 == 0.5.18 == 0.5.19 == 0.5.16 == 0.5.17 == 0.5.14 == 0.5.15 == 0.5.13 == 0.5.22 == 0.5.23 == 0.5.30 == 0.5.31 == 0.5.28 == 0.5.29 == 0.5.26 == 0.5.27 == 0.5.24 == 0.5.25 == 0.5.34 == 0.5.32 == 0.5.33 == 0.6.0 == 0.5.36 == 0.5.37 == 0.5.35 == 0.6.7 == 0.6.8 == 0.6.5 == 0.6.6 == 0.6.3 == 0.6.4 == 0.6.1 == 0.6.2 == 0.6.15 == 0.6.13 == 0.6.14 == 0.6.11 == 0.6.12 == 0.6.9 == 0.6.10 == 0.6.17 == 0.6.23 == 0.6.24 == 0.6.21 == 0.6.22 == 0.6.19 == 0.6.20 == 0.6.18 == 0.6.31 == 0.6.32 == 0.6.29 == 0.6.30 == 0.6.27 == 0.6.28 == 0.6.25 == 0.6.26 == 0.6.37 == 0.6.38 == 0.6.35 == 0.6.36 == 0.6.33 == 0.6.34 == 0.7.0 == 0.7.7 == 0.7.8 == 0.7.5 == 0.7.6 == 0.7.3 == 0.7.4 == 0.7.1 == 0.7.2 == 0.7.15 == 0.7.16 == 0.7.13 == 0.7.14 == 0.7.11 == 0.7.12 == 0.7.9 == 0.7.10 == 0.7.23 == 0.7.24 == 0.7.21 == 0.7.22 == 0.7.19 == 0.7.20 == 0.7.17 == 0.7.18 == 0.7.29 == 0.7.30 == 0.7.27 == 0.7.28 == 0.7.25 == 0.7.26 == 0.7.31 == 0.7.32 == 0.7.39 == 0.7.40 == 0.7.37 == 0.7.38 == 0.7.35 == 0.7.36 == 0.7.33 == 0.7.34 == 0.7.47 == 0.7.48 == 0.7.45 == 0.7.46 == 0.7.43 == 0.7.44 == 0.7.41 == 0.7.42 == 0.7.55 == 0.7.56 == 0.7.53 == 0.7.54 == 0.7.51 == 0.7.52 == 0.7.49 == 0.7.50 == 0.7.61 == 0.7.59 == 0.7.60 == 0.7.57 == 0.7.58 == 0.8.1 == 0.8.2 == 0.8.0 == 0.8.9 == 0.8.10 == 0.8.7 == 0.8.8 == 0.8.5 == 0.8.6 == 0.8.3 == 0.8.4 == 0.8.13 == 0.8.14 == 0.8.11 == 0.8.12
CVE-2009-3898	Low	November 24, 2009 11/24/09	== 0.6.1516 == 0.1.0 == 0.1.1 == 0.1.8 == 0.1.9 == 0.1.6 == 0.1.7 == 0.1.4 == 0.1.5 == 0.1.2 == 0.1.3 == 0.1.16 == 0.1.17 == 0.1.14 == 0.1.15 == 0.1.12 == 0.1.13 == 0.1.10 == 0.1.11 == 0.1.24 == 0.1.25 == 0.1.22 == 0.1.23 == 0.1.20 == 0.1.21 == 0.1.18 == 0.1.19 == 0.1.32 == 0.1.33 == 0.1.30 == 0.1.31 == 0.1.28 == 0.1.29 == 0.1.26 == 0.1.27 == 0.1.40 == 0.1.41 == 0.1.38 == 0.1.39 == 0.1.36 == 0.1.37 == 0.1.34 == 0.1.35 == 0.2.2 == 0.2.3 == 0.2.0 == 0.2.1 == 0.1.44 == 0.1.45 == 0.1.42 == 0.1.43 == 0.3.3 == 0.3.4 == 0.3.1 == 0.3.2 == 0.2.6 == 0.3.0 == 0.2.4 == 0.2.5 == 0.3.11 == 0.3.12 == 0.3.9 == 0.3.10 == 0.3.7 == 0.3.8 == 0.3.5 == 0.3.6 == 0.3.19 == 0.3.20 == 0.3.17 == 0.3.18 == 0.3.15 == 0.3.16 == 0.3.13 == 0.3.14 == 0.3.27 == 0.3.28 == 0.3.25 == 0.3.26 == 0.3.23 == 0.3.24 == 0.3.21 == 0.3.22 == 0.3.35 == 0.3.36 == 0.3.33 == 0.3.34 == 0.3.31 == 0.3.32 == 0.3.29 == 0.3.30 == 0.3.43 == 0.3.44 == 0.3.41 == 0.3.42 == 0.3.39 == 0.3.40 == 0.3.37 == 0.3.38 == 0.3.51 == 0.3.52 == 0.3.49 == 0.3.50 == 0.3.47 == 0.3.48 == 0.3.45 == 0.3.46 == 0.3.59 == 0.3.60 == 0.3.57 == 0.3.58 == 0.3.55 == 0.3.56 == 0.3.53 == 0.3.54 == 0.4.1 == 0.3.61 == 0.4.0 == 0.4.5 == 0.4.6 == 0.4.3 == 0.4.4 == 0.4.2 == 0.4.7 == 0.4.8 == 0.4.13 == 0.4.11 == 0.4.12 == 0.4.9 == 0.4.10 == 0.5.6 == 0.5.7 == 0.5.4 == 0.5.5 == 0.5.2 == 0.5.3 == 0.5.0 == 0.5.1 == 0.5.12 == 0.5.10 == 0.5.11 == 0.5.8 == 0.5.9 == 0.5.20 == 0.5.21 == 0.5.18 == 0.5.19 == 0.5.16 == 0.5.17 == 0.5.14 == 0.5.15 == 0.5.13 == 0.5.22 == 0.5.23 == 0.5.30 == 0.5.31 == 0.5.28 == 0.5.29 == 0.5.26 == 0.5.27 == 0.5.24 == 0.5.25 == 0.5.34 == 0.5.32 == 0.5.33 == 0.6.0 == 0.5.36 == 0.5.37 == 0.5.35 == 0.6.7 == 0.6.8 == 0.6.5 == 0.6.6 == 0.6.3 == 0.6.4 == 0.6.1 == 0.6.2 == 0.6.15 == 0.6.13 == 0.6.14 == 0.6.11 == 0.6.12 == 0.6.9 == 0.6.10 == 0.6.17 == 0.6.23 == 0.6.24 == 0.6.21 == 0.6.22 == 0.6.19 == 0.6.20 == 0.6.18 == 0.6.31 == 0.6.32 == 0.6.29 == 0.6.30 == 0.6.27 == 0.6.28 == 0.6.25 == 0.6.26 == 0.6.37 == 0.6.38 == 0.6.35 == 0.6.36 == 0.6.33 == 0.6.34 == 0.7.0 == 0.7.7 == 0.7.8 == 0.7.5 == 0.7.6 == 0.7.3 == 0.7.4 == 0.7.1 == 0.7.2 == 0.7.15 == 0.7.16 == 0.7.13 == 0.7.14 == 0.7.11 == 0.7.12 == 0.7.9 == 0.7.10 == 0.7.23 == 0.7.24 == 0.7.21 == 0.7.22 == 0.7.19 == 0.7.20 == 0.7.17 == 0.7.18 == 0.7.29 == 0.7.30 == 0.7.27 == 0.7.28 == 0.7.25 == 0.7.26 == 0.7.31 <= 0.7.62 == 0.7.32 == 0.7.39 == 0.7.40 == 0.7.37 == 0.7.38 == 0.7.35 == 0.7.36 == 0.7.33 == 0.7.34 == 0.7.47 == 0.7.48 == 0.7.45 == 0.7.46 == 0.7.43 == 0.7.44 == 0.7.41 == 0.7.42 == 0.7.55 == 0.7.56 == 0.7.53 == 0.7.54 == 0.7.51 == 0.7.52 == 0.7.49 == 0.7.50 == 0.7.61 == 0.7.59 == 0.7.60 == 0.7.57 == 0.7.58 == 0.8.1 == 0.8.2 == 0.8.0 == 0.8.9 == 0.8.10 == 0.8.7 == 0.8.8 == 0.8.5 == 0.8.6 == 0.8.3 == 0.8.4 == 0.8.15 == 0.8.13 == 0.8.14 == 0.8.11 == 0.8.12
CVE-2009-3555	Medium	November 9, 2009 11/9/09	>= 0.1.0 <= 0.8.22
CVE-2009-2629	High	September 15, 2009 9/15/09	>= 0.1.0 < 0.5.38 >= 0.6.0 < 0.6.39 >= 0.7.0 < 0.7.62 >= 0.8.0 < 0.8.15

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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.