How severe is CVE-2008-3802?

CVE-2008-3802 has a CVSS 2.0 base score of 7.1, rated high severity.

Is CVE-2008-3802 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-2008-3802?

CVE-2008-3802 primarily affects Cisco Ios. In total, 85 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-3802?

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-2008-3802 published?

CVE-2008-3802 was published on 2008-09-26 and last updated on 2026-06-16.

CVE-2008-3802

CVE-2008-3802 is a high-severity vulnerability in Cisco Ios with a CVSS 2.0 base score of 7.1. 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 7.1)
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Cisco Ios
Published: 2008-09-26
Last modified: 2026-06-16

Description

Unspecified vulnerability in the Session Initiation Protocol (SIP) implementation in Cisco IOS 12.2 through 12.4, when VoIP is configured, allows remote attackers to cause a denial of service (device reload) via unspecified valid SIP messages, aka Cisco bug ID CSCsk42759, a different vulnerability than CVE-2008-3800 and CVE-2008-3801.

Frequently asked questions

What is CVE-2008-3802?: Unspecified vulnerability in the Session Initiation Protocol (SIP) implementation in Cisco IOS 12.2 through 12.4, when VoIP is configured, allows remote attackers to cause a denial of service (device reload) via unspecified valid SIP messages, aka Cisco bug ID CSCsk42759, a different vulnerability than CVE-2008-3800 and CVE-2008-3801.
How severe is CVE-2008-3802?: CVE-2008-3802 has a CVSS 2.0 base score of 7.1, rated high severity.
Is CVE-2008-3802 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-2008-3802?: CVE-2008-3802 primarily affects Cisco Ios. In total, 85 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-3802?: 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-2008-3802 published?: CVE-2008-3802 was published on 2008-09-26 and last updated on 2026-06-16.

References

Affected products (85)

cpe:2.3:o:cisco:ios:12.2b:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2bx:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2by:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2cz:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2mc:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2t:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2tpc:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2xb:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2xm:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2xt:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2xu:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2xw:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2ya:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2yb:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2yc:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2yd:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2yf:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2yh:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2yj:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2yl:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2ym:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2yn:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2yt:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2yu:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2yv:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2yw:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2yy:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2zb:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2zc:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2zd:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2ze:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2zf:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2zh:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2zj:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2zl:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2zp:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.3b:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.3t:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.3tpc:*:*:*:*:*:*:*

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