Vulnerability Database

393,392

Total vulnerabilities in the database

CVE-2017-3862 — cisco / ios

Improper Restriction of Operations within the Bounds of a Memory Buffer

Multiple vulnerabilities in the EnergyWise module of Cisco IOS (12.2 and 15.0 through 15.6) and Cisco IOS XE (3.2 through 3.18) could allow an unauthenticated, remote attacker to cause a buffer overflow condition or a reload of an affected device, leading to a denial of service (DoS) condition. These vulnerabilities are due to improper parsing of crafted EnergyWise packets destined to an affected device. An attacker could exploit these vulnerabilities by sending crafted EnergyWise packets to be processed by an affected device. An exploit could allow the attacker to cause a buffer overflow condition or a reload of the affected device, leading to a DoS condition. Cisco IOS Software and Cisco IOS XE Software support EnergyWise for IPv4 communication. Only IPv4 packets destined to a device configured as an EnergyWise domain member can trigger these vulnerabilities. IPv6 packets cannot be used to trigger these vulnerabilities. Cisco Bug ID CSCuu76493.

  • Published: Apr 20, 2017
  • Updated: Oct 3, 2026
  • CVE: CVE-2017-3862
  • Severity: High
  • Exploit:
  • CISA KEV:

CVSS v2:

  • Severity: High
  • Score: 7.8
  • AV:N/AC:L/Au:N/C:N/I:N/A:C

CWEs:

Software Affected versions
cisco / ios = 12.2(33)sxi4
cisco / ios = 12.2(33)sxi4a
cisco / ios = 12.2(33)sxi5
cisco / ios = 12.2(33)sxi6
cisco / ios = 12.2(33)sxi7
cisco / ios = 12.2(33)sxi8
cisco / ios = 12.2(33)sxi8a
cisco / ios = 12.2(33)sxi9
cisco / ios = 12.2(33)sxi10
cisco / ios = 12.2(33)sxi11
cisco / ios = 12.2(33)sxi12
cisco / ios = 12.2(33)sxi13
cisco / ios = 12.2(33)sxi14
cisco / ios = 12.2(33)sxj
cisco / ios = 12.2(33)sxj1
cisco / ios = 12.2(33)sxj2
cisco / ios = 12.2(33)sxj3
cisco / ios = 12.2(33)sxj4
cisco / ios = 12.2(33)sxj5
cisco / ios = 12.2(33)sxj6
cisco / ios = 12.2(33)sxj7
cisco / ios = 12.2(33)sxj8
cisco / ios = 12.2(33)sxj9
cisco / ios = 12.2(33)sxj10
cisco / ios = 12.2(52)ex
cisco / ios = 12.2(52)ex1
cisco / ios = 12.2(52)ey
cisco / ios = 12.2(52)ey1
cisco / ios = 12.2(52)ey1b
cisco / ios = 12.2(52)ey1c
cisco / ios = 12.2(52)ey2
cisco / ios = 12.2(52)ey2a
cisco / ios = 12.2(52)ey3
cisco / ios = 12.2(52)ey3a
cisco / ios = 12.2(52)ey4
cisco / ios = 12.2(53)ex
cisco / ios = 12.2(53)ey
cisco / ios = 12.2(53)ez
cisco / ios = 12.2(53)se
cisco / ios = 12.2(53)se1
cisco / ios = 12.2(53)se2
cisco / ios = 12.2(54)se
cisco / ios = 12.2(54)sg
cisco / ios = 12.2(54)sg1
cisco / ios = 12.2(54)wo
cisco / ios = 12.2(54)xo
cisco / ios = 12.2(55)ex
cisco / ios = 12.2(55)ex1
cisco / ios = 12.2(55)ex2
cisco / ios = 12.2(55)ex3
cisco / ios = 12.2(55)ey
cisco / ios = 12.2(55)ez
cisco / ios = 12.2(55)se
cisco / ios = 12.2(55)se1
cisco / ios = 12.2(55)se2
cisco / ios = 12.2(55)se3
cisco / ios = 12.2(55)se4
cisco / ios = 12.2(55)se5
cisco / ios = 12.2(55)se6
cisco / ios = 12.2(55)se7
cisco / ios = 12.2(55)se8
cisco / ios = 12.2(55)se9
cisco / ios = 12.2(55)se10
cisco / ios = 12.2(55)se11
cisco / ios = 12.2(58)ey
cisco / ios = 12.2(58)ey1
cisco / ios = 12.2(58)ey2
cisco / ios = 12.2(58)se
cisco / ios = 12.2(58)se1
cisco / ios = 12.2(58)se2
cisco / ios = 12.2(60)ez
cisco / ios = 12.2(60)ez1
cisco / ios = 12.2(60)ez2
cisco / ios = 12.2(60)ez3
cisco / ios = 12.2(60)ez4
cisco / ios = 12.2(60)ez5
cisco / ios = 12.2(60)ez6
cisco / ios = 12.2(60)ez7
cisco / ios = 12.2(60)ez8
cisco / ios = 12.2(60)ez9
cisco / ios = 15.0(1)m2
cisco / ios = 15.0(1)m3
cisco / ios = 15.0(1)m4
cisco / ios = 15.0(1)m5
cisco / ios = 15.0(1)m6
cisco / ios = 15.0(1)m7
cisco / ios = 15.0(1)m8
cisco / ios = 15.0(1)m9
cisco / ios = 15.0(1)m10
cisco / ios = 15.0(1)se
cisco / ios = 15.0(1)se1
cisco / ios = 15.0(1)se2
cisco / ios = 15.0(1)se3
cisco / ios = 15.0(1)sy1
cisco / ios = 15.0(1)sy2
cisco / ios = 15.0(1)sy3
cisco / ios = 15.0(1)sy4
cisco / ios = 15.0(1)sy5
cisco / ios = 15.0(1)sy6
cisco / ios = 15.0(1)sy7
cisco / ios = 15.0(1)sy7a
cisco / ios = 15.0(1)sy8
cisco / ios = 15.0(1)sy9
cisco / ios = 15.0(1)sy10
cisco / ios = 15.0(1)xo
cisco / ios = 15.0(1)xo1
cisco / ios = 15.0(2)ed
cisco / ios = 15.0(2)ed1
cisco / ios = 15.0(2)eh
cisco / ios = 15.0(2)ej
cisco / ios = 15.0(2)ej1
cisco / ios = 15.0(2)ek
cisco / ios = 15.0(2)ek1
cisco / ios = 15.0(2)ex
cisco / ios = 15.0(2)ex1
cisco / ios = 15.0(2)ex2
cisco / ios = 15.0(2)ex3
cisco / ios = 15.0(2)ex4
cisco / ios = 15.0(2)ex5
cisco / ios = 15.0(2)ex8
cisco / ios = 15.0(2)ex10
cisco / ios = 15.0(2)ez
cisco / ios = 15.0(2)se
cisco / ios = 15.0(2)se1
cisco / ios = 15.0(2)se2
cisco / ios = 15.0(2)se3
cisco / ios = 15.0(2)se4
cisco / ios = 15.0(2)se5
cisco / ios = 15.0(2)se6
cisco / ios = 15.0(2)se7
cisco / ios = 15.0(2)se9
cisco / ios = 15.0(2)se10
cisco / ios = 15.0(2)sg
cisco / ios = 15.0(2)sg1
cisco / ios = 15.0(2)sg2
cisco / ios = 15.0(2)sg3
cisco / ios = 15.0(2)sg4
cisco / ios = 15.0(2)sg5
cisco / ios = 15.0(2)sg6
cisco / ios = 15.0(2)sg7
cisco / ios = 15.0(2)sg8
cisco / ios = 15.0(2)xo
cisco / ios = 15.0(2a)ex5
cisco / ios = 15.0(2a)se9
cisco / ios = 15.1(1)sg
cisco / ios = 15.1(1)sg1
cisco / ios = 15.1(1)sg2
cisco / ios = 15.1(1)sy
cisco / ios = 15.1(1)sy2
cisco / ios = 15.1(1)sy3
cisco / ios = 15.1(1)sy4
cisco / ios = 15.1(1)sy5
cisco / ios = 15.1(1)sy6
cisco / ios = 15.1(1)t
cisco / ios = 15.1(1)t1
cisco / ios = 15.1(1)t2
cisco / ios = 15.1(1)t3
cisco / ios = 15.1(1)t4
cisco / ios = 15.1(1)t5
cisco / ios = 15.1(2)gc
cisco / ios = 15.1(2)gc1
cisco / ios = 15.1(2)gc2
cisco / ios = 15.1(2)sg
cisco / ios = 15.1(2)sg1
cisco / ios = 15.1(2)sg2
cisco / ios = 15.1(2)sg3
cisco / ios = 15.1(2)sg4
cisco / ios = 15.1(2)sg5
cisco / ios = 15.1(2)sg6
cisco / ios = 15.1(2)sg7
cisco / ios = 15.1(2)sg8
cisco / ios = 15.1(2)sy
cisco / ios = 15.1(2)sy1
cisco / ios = 15.1(2)sy2
cisco / ios = 15.1(2)sy3
cisco / ios = 15.1(2)sy4
cisco / ios = 15.1(2)sy4a
cisco / ios = 15.1(2)sy5
cisco / ios = 15.1(2)sy6
cisco / ios = 15.1(2)sy7
cisco / ios = 15.1(2)sy8
cisco / ios = 15.1(2)sy10
cisco / ios = 15.1(2)t
cisco / ios = 15.1(2)t0a
cisco / ios = 15.1(2)t1
cisco / ios = 15.1(2)t2
cisco / ios = 15.1(2)t2a
cisco / ios = 15.1(2)t3
cisco / ios = 15.1(2)t4
cisco / ios = 15.1(2)t5
cisco / ios = 15.1(3)t
cisco / ios = 15.1(3)t1
cisco / ios = 15.1(3)t2
cisco / ios = 15.1(3)t3
cisco / ios = 15.1(3)t4
cisco / ios = 15.1(4)gc
cisco / ios = 15.1(4)gc1
cisco / ios = 15.1(4)gc2
cisco / ios = 15.1(4)m
cisco / ios = 15.1(4)m1
cisco / ios = 15.1(4)m2
cisco / ios = 15.1(4)m3
cisco / ios = 15.1(4)m3a
cisco / ios = 15.1(4)m4
cisco / ios = 15.1(4)m5
cisco / ios = 15.1(4)m6
cisco / ios = 15.1(4)m7
cisco / ios = 15.1(4)m8
cisco / ios = 15.1(4)m9
cisco / ios = 15.1(4)m10
cisco / ios = 15.2(1)e
cisco / ios = 15.2(1)e1
cisco / ios = 15.2(1)e2
cisco / ios = 15.2(1)e3
cisco / ios = 15.2(1)gc
cisco / ios = 15.2(1)gc1
cisco / ios = 15.2(1)gc2
cisco / ios = 15.2(1)sy
cisco / ios = 15.2(1)sy0a
cisco / ios = 15.2(1)sy1
cisco / ios = 15.2(1)sy1a
cisco / ios = 15.2(1)sy2
cisco / ios = 15.2(1)sy3
cisco / ios = 15.2(1)t
cisco / ios = 15.2(1)t1
cisco / ios = 15.2(1)t2
cisco / ios = 15.2(1)t3
cisco / ios = 15.2(1)t3a
cisco / ios = 15.2(1)t4
cisco / ios = 15.2(2)e
cisco / ios = 15.2(2)e1
cisco / ios = 15.2(2)e2
cisco / ios = 15.2(2)e4
cisco / ios = 15.2(2)e5
cisco / ios = 15.2(2)e5a
cisco / ios = 15.2(2)eb
cisco / ios = 15.2(2)eb1
cisco / ios = 15.2(2)eb2
cisco / ios = 15.2(2)gc
cisco / ios = 15.2(2)sy
cisco / ios = 15.2(2)sy1
cisco / ios = 15.2(2)sy2
cisco / ios = 15.2(2)t
cisco / ios = 15.2(2)t1
cisco / ios = 15.2(2)t2
cisco / ios = 15.2(2)t3
cisco / ios = 15.2(2)t4
cisco / ios = 15.2(2a)e1
cisco / ios = 15.2(3)e
cisco / ios = 15.2(3)e1
cisco / ios = 15.2(3)e2
cisco / ios = 15.2(3)e3
cisco / ios = 15.2(3)gc
cisco / ios = 15.2(3)gc1
cisco / ios = 15.2(3)t
cisco / ios = 15.2(3)t1
cisco / ios = 15.2(3)t2
cisco / ios = 15.2(3)t3
cisco / ios = 15.2(3)t4
cisco / ios = 15.2(3a)e
cisco / ios = 15.2(3m)e2
cisco / ios = 15.2(4)e
cisco / ios = 15.2(4)gc
cisco / ios = 15.2(4)gc1
cisco / ios = 15.2(4)gc2
cisco / ios = 15.2(4)gc3
cisco / ios = 15.2(4)m
cisco / ios = 15.2(4)m1
cisco / ios = 15.2(4)m2
cisco / ios = 15.2(4)m3
cisco / ios = 15.2(4)m4
cisco / ios = 15.2(4)m5
cisco / ios = 15.2(4)m6
cisco / ios = 15.2(4)m6a
cisco / ios = 15.2(4)m7
cisco / ios = 15.2(4)m8
cisco / ios = 15.2(4)m9
cisco / ios = 15.2(4)m10
cisco / ios = 15.2(4)m11
cisco / ios = 15.3(1)sy
cisco / ios = 15.3(1)sy2
cisco / ios = 15.3(1)t
cisco / ios = 15.3(1)t1
cisco / ios = 15.3(1)t2
cisco / ios = 15.3(1)t3
cisco / ios = 15.3(1)t4
cisco / ios = 15.3(2)t
cisco / ios = 15.3(2)t1
cisco / ios = 15.3(2)t2
cisco / ios = 15.3(2)t3
cisco / ios = 15.3(2)t4
cisco / ios = 15.3(3)m
cisco / ios = 15.3(3)m1
cisco / ios = 15.3(3)m2
cisco / ios = 15.3(3)m3
cisco / ios = 15.3(3)m4
cisco / ios = 15.3(3)m5
cisco / ios = 15.3(3)m6
cisco / ios = 15.3(3)m7
cisco / ios = 15.3(3)m9
cisco / ios = 15.4(1)cg
cisco / ios = 15.4(1)cg1
cisco / ios = 15.4(1)sy
cisco / ios = 15.4(1)sy1
cisco / ios = 15.4(1)t
cisco / ios = 15.4(1)t1
cisco / ios = 15.4(1)t2
cisco / ios = 15.4(1)t3
cisco / ios = 15.4(1)t4
cisco / ios = 15.4(2)cg
cisco / ios = 15.4(2)t
cisco / ios = 15.4(2)t1
cisco / ios = 15.4(2)t2
cisco / ios = 15.4(2)t3
cisco / ios = 15.4(2)t4
cisco / ios = 15.4(3)m
cisco / ios = 15.4(3)m1
cisco / ios = 15.4(3)m2
cisco / ios = 15.4(3)m3
cisco / ios = 15.4(3)m4
cisco / ios = 15.4(3)m5
cisco / ios = 15.4(3)m6
cisco / ios = 15.4(3)m6a
cisco / ios = 15.4(3)m7
cisco / ios = 15.5(1)t
cisco / ios = 15.5(1)t1
cisco / ios = 15.5(1)t2
cisco / ios = 15.5(1)t3
cisco / ios = 15.5(2)t
cisco / ios = 15.5(2)t1
cisco / ios = 15.5(2)t2
cisco / ios = 15.5(2)t3
cisco / ios = 15.5(2)t4
cisco / ios = 15.5(3)m0a
cisco / ios = 15.5(3)m1
cisco / ios = 15.5(3)m2
cisco / ios = 15.5(3)m4
cisco / ios = 15.5(3)m4a
cisco / ios = 15.5(3)m5
cisco / ios = 15.5(3)s5
cisco / ios = 15.6(1)t
cisco / ios = 15.6(1)t0a
cisco / ios = 15.6(1)t1
cisco / ios = 15.6(1)t2
cisco / ios = 15.6(2)t
cisco / ios = 15.6(2)t1
cisco / ios = 15.6(2)t2
cisco / ios = 15.6(3)m
cisco / ios = 15.6(3)m0a
cisco / ios = 15.6(3)m1
cisco / ios = 15.6(3)m1b
cisco / ios = 15.6(3)m2
cisco / ios_xe = 3.2.1sg
cisco / ios_xe = 3.2.8sg
cisco / ios_xe = 3.3.1sg
cisco / ios_xe = 3.3.1sq
cisco / ios_xe = 3.4.1sg
cisco / ios_xe = 3.4.2sg
cisco / ios_xe = 3.4.3sg
cisco / ios_xe = 3.4.6sg
cisco / ios_xe = 3.4.8sg
cisco / ios_xe = 3.5.1e
cisco / ios_xe = 3.5.3e
cisco / ios_xe = 3.6.0e
cisco / ios_xe = 3.6.1e
cisco / ios_xe = 3.6.2ae
cisco / ios_xe = 3.6.2e
cisco / ios_xe = 3.6.4e
cisco / ios_xe = 3.6.5ae
cisco / ios_xe = 3.6.5e
cisco / ios_xe = 3.7.0e
cisco / ios_xe = 3.7.1e
cisco / ios_xe = 3.7.2e
cisco / ios_xe = 3.7.3e
cisco / ios_xe = 3.8.0e
cisco / ios_xe = 3.18.1sp

Frequently Asked Questions

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.