CVE-2009-2871
CVE-2009-2871 is a high-severity vulnerability in Cisco Ios with a CVSS 2.0 base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: High (CVSS 2.0 base score 7.8)
- EPSS exploit prediction: 3% (83rd percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Cisco Ios
- Published:
- Last modified:
Description
Unspecified vulnerability in Cisco IOS 12.2 and 12.4, when SSLVPN sessions, SSH sessions, or IKE encrypted nonces are enabled, allows remote attackers to cause a denial of service (device reload) via a crafted encrypted packet, aka Bug ID CSCsq24002.
Frequently asked questions
- What is CVE-2009-2871?
- Unspecified vulnerability in Cisco IOS 12.2 and 12.4, when SSLVPN sessions, SSH sessions, or IKE encrypted nonces are enabled, allows remote attackers to cause a denial of service (device reload) via a crafted encrypted packet, aka Bug ID CSCsq24002.
- How severe is CVE-2009-2871?
- CVE-2009-2871 has a CVSS 2.0 base score of 7.8, rated high severity.
- Is CVE-2009-2871 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2009-2871?
- CVE-2009-2871 primarily affects Cisco Ios. In total, 17 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2009-2871?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2009-2871 published?
- CVE-2009-2871 was published on 2009-09-28 and last updated on 2026-06-16.
References
- http://tools.cisco.com/security/center/viewAlert.x?alertId=18892
- http://www.cisco.com/en/US/products/products_security_advisory09186a0080af811c.shtml
- http://www.securitytracker.com/id?1022930
- http://www.vupen.com/english/advisories/2009/2759
Affected products (17)
- cpe:2.3:o:cisco:ios:12.2xna:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:12.2xnb:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:12.2xnc:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:12.2xnd:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:12.4md:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:12.4mr:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:12.4sw:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:12.4t:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:12.4xf:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:12.4xj:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:12.4xk:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:12.4xq:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:12.4xr:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:12.4xv:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:12.4xw:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:12.4xy:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:12.4xz:*:*:*:*:*:*:*
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