CVE-2009-0626

CVE-2009-0626 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. The underlying weakness is classified as CWE-399.

Key facts

• Severity: High (CVSS 2.0 base score 7.8)
• EPSS exploit prediction: 2% (78th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-399
• Affected product: Cisco Ios
• Published: 2009-03-27
• Last modified: 2026-06-16

Description

The SSLVPN feature in Cisco IOS 12.3 through 12.4 allows remote attackers to cause a denial of service (device reload or hang) via a crafted HTTPS packet.

Frequently asked questions

What is CVE-2009-0626?

The SSLVPN feature in Cisco IOS 12.3 through 12.4 allows remote attackers to cause a denial of service (device reload or hang) via a crafted HTTPS packet.

How severe is CVE-2009-0626?

CVE-2009-0626 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2009-0626 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-0626?

CVE-2009-0626 primarily affects Cisco Ios. In total, 77 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-0626?

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-2009-0626 published?

CVE-2009-0626 was published on 2009-03-27 and last updated on 2026-06-16.

References

• http://secunia.com/advisories/34438
• http://securitytracker.com/id?1021896
• http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90424.shtml
• http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90469.shtml
• http://www.securityfocus.com/bid/34239
• http://www.vupen.com/english/advisories/2009/0851
• https://exchange.xforce.ibmcloud.com/vulnerabilities/49425
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6919

Affected products (77)

• cpe:2.3:o:cisco:ios:12.3:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3b:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3bc:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3bw:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3ja:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3jea:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3jeb:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3jec:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3jk:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3jl:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3jx:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3t:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3tpc:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3va:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3xa:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3xb:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3xc:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3xd:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3xf:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3xg:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3xi:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3xj:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3xk:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3xl:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3xq:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3xs:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3xu:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3xw:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3xx:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3xy:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3xz:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3ya:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3yd:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3yf:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3yg:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3yh:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3yi:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3yj:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3yk:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3ym:*:*:*:*:*:*:*

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