How severe is CVE-2002-2239?

CVE-2002-2239 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2002-2239 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2002-2239?

CVE-2002-2239 affects Cisco Ios. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2002-2239?

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-2002-2239 published?

CVE-2002-2239 was published on 2002-12-31 and last updated on 2026-06-16.

CVE-2002-2239

CVE-2002-2239 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-20.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Cisco Ios
Published: 2002-12-31
Last modified: 2026-06-16

Description

The Cisco Optical Service Module (OSM) for the Catalyst 6500 and 7600 series running Cisco IOS 12.1(8)E through 12.1(13.4)E allows remote attackers to cause a denial of service (hang) via a malformed packet.

Frequently asked questions

What is CVE-2002-2239?: The Cisco Optical Service Module (OSM) for the Catalyst 6500 and 7600 series running Cisco IOS 12.1(8)E through 12.1(13.4)E allows remote attackers to cause a denial of service (hang) via a malformed packet.
How severe is CVE-2002-2239?: CVE-2002-2239 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2002-2239 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2002-2239?: CVE-2002-2239 affects Cisco Ios. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2002-2239?: 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-2002-2239 published?: CVE-2002-2239 was published on 2002-12-31 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:cisco:ios:12.1e:*:*:*:*:*:*:*

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