Vulnerability Database

393,392

Total vulnerabilities in the database

CVE-2016-6392 — cisco / ios

Resource Management Errors

Cisco IOS 12.2 and 15.0 through 15.3 and IOS XE 3.1 through 3.9 allow remote attackers to cause a denial of service (device restart) via a crafted IPv4 Multicast Source Discovery Protocol (MSDP) Source-Active (SA) message, aka Bug ID CSCud36767.

  • Published: Oct 5, 2016
  • Updated: Oct 3, 2026
  • CVE: CVE-2016-6392
  • 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)cx
cisco / ios = 12.2(33)cy
cisco / ios = 12.2(33)cy1
cisco / ios = 12.2(33)ira
cisco / ios = 12.2(33)irb
cisco / ios = 12.2(33)irc
cisco / ios = 12.2(33)ird
cisco / ios = 12.2(33)ire
cisco / ios = 12.2(33)ire1
cisco / ios = 12.2(33)ire2
cisco / ios = 12.2(33)irf
cisco / ios = 12.2(33)irg
cisco / ios = 12.2(33)irg1
cisco / ios = 12.2(33)irh
cisco / ios = 12.2(33)irh1
cisco / ios = 12.2(33)iri
cisco / ios = 12.2(33)mra
cisco / ios = 12.2(33)mrb
cisco / ios = 12.2(33)mrb1
cisco / ios = 12.2(33)mrb2
cisco / ios = 12.2(33)mrb3
cisco / ios = 12.2(33)mrb4
cisco / ios = 12.2(33)mrb5
cisco / ios = 12.2(33)mrb6
cisco / ios = 12.2(33)sb
cisco / ios = 12.2(33)sb1
cisco / ios = 12.2(33)sb2
cisco / ios = 12.2(33)sb3
cisco / ios = 12.2(33)sb4
cisco / ios = 12.2(33)sb5
cisco / ios = 12.2(33)sb6
cisco / ios = 12.2(33)sb7
cisco / ios = 12.2(33)sb8
cisco / ios = 12.2(33)sb9
cisco / ios = 12.2(33)sb10
cisco / ios = 12.2(33)sb11
cisco / ios = 12.2(33)sb12
cisco / ios = 12.2(33)sb13
cisco / ios = 12.2(33)sb14
cisco / ios = 12.2(33)sb15
cisco / ios = 12.2(33)sb16
cisco / ios = 12.2(33)sb17
cisco / ios = 12.2(33)sca
cisco / ios = 12.2(33)sca1
cisco / ios = 12.2(33)sca2
cisco / ios = 12.2(33)scb
cisco / ios = 12.2(33)scb1
cisco / ios = 12.2(33)scb2
cisco / ios = 12.2(33)scb3
cisco / ios = 12.2(33)scb4
cisco / ios = 12.2(33)scb5
cisco / ios = 12.2(33)scb6
cisco / ios = 12.2(33)scb7
cisco / ios = 12.2(33)scb8
cisco / ios = 12.2(33)scb9
cisco / ios = 12.2(33)scb10
cisco / ios = 12.2(33)scb11
cisco / ios = 12.2(33)scc
cisco / ios = 12.2(33)scc1
cisco / ios = 12.2(33)scc2
cisco / ios = 12.2(33)scc3
cisco / ios = 12.2(33)scc4
cisco / ios = 12.2(33)scc5
cisco / ios = 12.2(33)scc6
cisco / ios = 12.2(33)scc7
cisco / ios = 12.2(33)scd
cisco / ios = 12.2(33)scd1
cisco / ios = 12.2(33)scd2
cisco / ios = 12.2(33)scd3
cisco / ios = 12.2(33)scd4
cisco / ios = 12.2(33)scd5
cisco / ios = 12.2(33)scd6
cisco / ios = 12.2(33)scd7
cisco / ios = 12.2(33)scd8
cisco / ios = 12.2(33)sce
cisco / ios = 12.2(33)sce1
cisco / ios = 12.2(33)sce2
cisco / ios = 12.2(33)sce3
cisco / ios = 12.2(33)sce4
cisco / ios = 12.2(33)sce5
cisco / ios = 12.2(33)sce6
cisco / ios = 12.2(33)scf
cisco / ios = 12.2(33)scf1
cisco / ios = 12.2(33)scf2
cisco / ios = 12.2(33)scf3
cisco / ios = 12.2(33)scf4
cisco / ios = 12.2(33)scf5
cisco / ios = 12.2(33)scg
cisco / ios = 12.2(33)scg1
cisco / ios = 12.2(33)scg2
cisco / ios = 12.2(33)scg3
cisco / ios = 12.2(33)scg4
cisco / ios = 12.2(33)scg5
cisco / ios = 12.2(33)scg6
cisco / ios = 12.2(33)scg7
cisco / ios = 12.2(33)sch
cisco / ios = 12.2(33)sch0a
cisco / ios = 12.2(33)sch1
cisco / ios = 12.2(33)sch2
cisco / ios = 12.2(33)sch2a
cisco / ios = 12.2(33)sch3
cisco / ios = 12.2(33)sch4
cisco / ios = 12.2(33)sch5
cisco / ios = 12.2(33)sch6
cisco / ios = 12.2(33)sci
cisco / ios = 12.2(33)sci1
cisco / ios = 12.2(33)sci1a
cisco / ios = 12.2(33)sci2
cisco / ios = 12.2(33)sci2a
cisco / ios = 12.2(33)sci3
cisco / ios = 12.2(33)scj
cisco / ios = 12.2(33)srb
cisco / ios = 12.2(33)srb1
cisco / ios = 12.2(33)srb2
cisco / ios = 12.2(33)srb3
cisco / ios = 12.2(33)srb4
cisco / ios = 12.2(33)srb5
cisco / ios = 12.2(33)srb5a
cisco / ios = 12.2(33)srb6
cisco / ios = 12.2(33)srb7
cisco / ios = 12.2(33)src
cisco / ios = 12.2(33)src1
cisco / ios = 12.2(33)src2
cisco / ios = 12.2(33)src3
cisco / ios = 12.2(33)src4
cisco / ios = 12.2(33)src5
cisco / ios = 12.2(33)src6
cisco / ios = 12.2(33)srd
cisco / ios = 12.2(33)srd1
cisco / ios = 12.2(33)srd2
cisco / ios = 12.2(33)srd2a
cisco / ios = 12.2(33)srd3
cisco / ios = 12.2(33)srd4
cisco / ios = 12.2(33)srd5
cisco / ios = 12.2(33)srd6
cisco / ios = 12.2(33)srd7
cisco / ios = 12.2(33)srd8
cisco / ios = 12.2(33)sre
cisco / ios = 12.2(33)sre0a
cisco / ios = 12.2(33)sre1
cisco / ios = 12.2(33)sre2
cisco / ios = 12.2(33)sre3
cisco / ios = 12.2(33)sre4
cisco / ios = 12.2(33)sre5
cisco / ios = 12.2(33)sre6
cisco / ios = 12.2(33)sre7
cisco / ios = 12.2(33)sre7a
cisco / ios = 12.2(33)sre8
cisco / ios = 12.2(33)sre9
cisco / ios = 12.2(33)sre9a
cisco / ios = 12.2(33)sre10
cisco / ios = 12.2(33)sre11
cisco / ios = 12.2(33)sre12
cisco / ios = 12.2(33)sre13
cisco / ios = 12.2(33)sre14
cisco / ios = 12.2(33)xn1
cisco / ios = 12.2(58)ex
cisco / ios = 12.2(58)ey
cisco / ios = 12.2(58)ey1
cisco / ios = 12.2(58)ey2
cisco / ios = 12.2(58)ez
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)ex
cisco / ios = 15.0(1)m
cisco / ios = 15.0(1)m1
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)mr
cisco / ios = 15.0(1)s
cisco / ios = 15.0(1)s1
cisco / ios = 15.0(1)s2
cisco / ios = 15.0(1)s3a
cisco / ios = 15.0(1)s4
cisco / ios = 15.0(1)s4a
cisco / ios = 15.0(1)s5
cisco / ios = 15.0(1)s6
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)sy
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)xa
cisco / ios = 15.0(1)xa1
cisco / ios = 15.0(1)xa2
cisco / ios = 15.0(1)xa3
cisco / ios = 15.0(1)xa4
cisco / ios = 15.0(1)xa5
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)ex3
cisco / ios = 15.0(2)ex4
cisco / ios = 15.0(2)ex5
cisco / ios = 15.0(2)ey
cisco / ios = 15.0(2)ey1
cisco / ios = 15.0(2)ey2
cisco / ios = 15.0(2)ey3
cisco / ios = 15.0(2)ez
cisco / ios = 15.0(2)mr
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(2a)ex5
cisco / ios = 15.1(1)mr
cisco / ios = 15.1(1)mr1
cisco / ios = 15.1(1)mr2
cisco / ios = 15.1(1)mr3
cisco / ios = 15.1(1)mr4
cisco / ios = 15.1(1)s
cisco / ios = 15.1(1)s1
cisco / ios = 15.1(1)s2
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)sy1
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(1)xb
cisco / ios = 15.1(2)ey
cisco / ios = 15.1(2)ey1a
cisco / ios = 15.1(2)ey2
cisco / ios = 15.1(2)ey2a
cisco / ios = 15.1(2)ey3
cisco / ios = 15.1(2)ey4
cisco / ios = 15.1(2)gc
cisco / ios = 15.1(2)gc1
cisco / ios = 15.1(2)gc2
cisco / ios = 15.1(2)s
cisco / ios = 15.1(2)s1
cisco / ios = 15.1(2)s2
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)sng
cisco / ios = 15.1(2)snh
cisco / ios = 15.1(2)sni
cisco / ios = 15.1(2)sni1
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)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)mr
cisco / ios = 15.1(3)mra
cisco / ios = 15.1(3)mra1
cisco / ios = 15.1(3)mra2
cisco / ios = 15.1(3)s
cisco / ios = 15.1(3)s0a
cisco / ios = 15.1(3)s1
cisco / ios = 15.1(3)s2
cisco / ios = 15.1(3)s3
cisco / ios = 15.1(3)s4
cisco / ios = 15.1(3)s5
cisco / ios = 15.1(3)s5a
cisco / ios = 15.1(3)s6
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)ey
cisco / ios = 15.2(1)gc
cisco / ios = 15.2(1)gc1
cisco / ios = 15.2(1)gc2
cisco / ios = 15.2(1)s
cisco / ios = 15.2(1)s1
cisco / ios = 15.2(1)s2
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)gc
cisco / ios = 15.2(2)s
cisco / ios = 15.2(2)s0a
cisco / ios = 15.2(2)s0c
cisco / ios = 15.2(2)s1
cisco / ios = 15.2(2)s2
cisco / ios = 15.2(2)sng
cisco / ios = 15.2(2)snh1
cisco / ios = 15.2(2)sni
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(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(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)s
cisco / ios = 15.2(4)s1
cisco / ios = 15.2(4)s2
cisco / ios = 15.2(4)s3
cisco / ios = 15.2(4)s3a
cisco / ios = 15.2(4)s4
cisco / ios = 15.2(4)s4a
cisco / ios = 15.2(4)s5
cisco / ios = 15.2(4)s6
cisco / ios = 15.2(4)s7
cisco / ios = 15.3(1)s
cisco / ios = 15.3(1)s1
cisco / ios = 15.3(1)s2
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)s
cisco / ios = 15.3(2)s0a
cisco / ios = 15.3(2)s1
cisco / ios = 15.3(2)s2
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_xe = 3.1.0s
cisco / ios_xe = 3.1.1s
cisco / ios_xe = 3.1.2s
cisco / ios_xe = 3.1.3as
cisco / ios_xe = 3.1.4as
cisco / ios_xe = 3.1.4s
cisco / ios_xe = 3.2.0ja
cisco / ios_xe = 3.2.0se
cisco / ios_xe = 3.2.1s
cisco / ios_xe = 3.2.1se
cisco / ios_xe = 3.2.2s
cisco / ios_xe = 3.2.2se
cisco / ios_xe = 3.2.3se
cisco / ios_xe = 3.3.0s
cisco / ios_xe = 3.3.0se
cisco / ios_xe = 3.3.0sg
cisco / ios_xe = 3.3.0xo
cisco / ios_xe = 3.3.1s
cisco / ios_xe = 3.3.1se
cisco / ios_xe = 3.3.1sg
cisco / ios_xe = 3.3.1xo
cisco / ios_xe = 3.3.2s
cisco / ios_xe = 3.3.2se
cisco / ios_xe = 3.3.2sg
cisco / ios_xe = 3.3.2xo
cisco / ios_xe = 3.3.3se
cisco / ios_xe = 3.3.4se
cisco / ios_xe = 3.3.5se
cisco / ios_xe = 3.4.0as
cisco / ios_xe = 3.4.0s
cisco / ios_xe = 3.4.0sg
cisco / ios_xe = 3.4.1s
cisco / ios_xe = 3.4.1sg
cisco / ios_xe = 3.4.2s
cisco / ios_xe = 3.4.2sg
cisco / ios_xe = 3.4.3s
cisco / ios_xe = 3.4.3sg
cisco / ios_xe = 3.4.4s
cisco / ios_xe = 3.4.4sg
cisco / ios_xe = 3.4.5s
cisco / ios_xe = 3.4.5sg
cisco / ios_xe = 3.4.6s
cisco / ios_xe = 3.4.6sg
cisco / ios_xe = 3.4.7sg
cisco / ios_xe = 3.5.0e
cisco / ios_xe = 3.5.0s
cisco / ios_xe = 3.5.1e
cisco / ios_xe = 3.5.1s
cisco / ios_xe = 3.5.2e
cisco / ios_xe = 3.5.2s
cisco / ios_xe = 3.5.3e
cisco / ios_xe = 3.6.0s
cisco / ios_xe = 3.6.1s
cisco / ios_xe = 3.6.2s
cisco / ios_xe = 3.6.3e
cisco / ios_xe = 3.7.0s
cisco / ios_xe = 3.7.1s
cisco / ios_xe = 3.7.2s
cisco / ios_xe = 3.7.2ts
cisco / ios_xe = 3.7.3s
cisco / ios_xe = 3.7.4as
cisco / ios_xe = 3.7.4s
cisco / ios_xe = 3.7.5s
cisco / ios_xe = 3.7.6s
cisco / ios_xe = 3.7.7s
cisco / ios_xe = 3.8.0s
cisco / ios_xe = 3.8.1s
cisco / ios_xe = 3.8.2s
cisco / ios_xe = 3.9.0as
cisco / ios_xe = 3.9.0s
cisco / ios_xe = 3.9.1as
cisco / ios_xe = 3.9.1s
cisco / ios_xe = 3.9.2s

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.