How severe is CVE-2011-1625?

CVE-2011-1625 has a CVSS 2.0 base score of 5.4, rated medium severity.

Is CVE-2011-1625 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-1625?

CVE-2011-1625 primarily affects Cisco Ios. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-1625?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-1625 published?

CVE-2011-1625 was published on 2011-08-18 and last updated on 2026-06-16.

CVE-2011-1625

CVE-2011-1625 is a medium-severity vulnerability in Cisco Ios with a CVSS 2.0 base score of 5.4. 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-362.

Key facts

Severity: Medium (CVSS 2.0 base score 5.4)
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-362
Affected product: Cisco Ios
Published: 2011-08-18
Last modified: 2026-06-16

Description

Cisco IOS 12.2, 12.3, 12.4, 15.0, and 15.1, when the data-link switching (DLSw) feature is configured, allows remote attackers to cause a denial of service (device crash) by sending a sequence of malformed packets and leveraging a "narrow timing window," aka Bug ID CSCtf74999, a different vulnerability than CVE-2007-0199, CVE-2008-1152, and CVE-2009-0629.

Frequently asked questions

What is CVE-2011-1625?: Cisco IOS 12.2, 12.3, 12.4, 15.0, and 15.1, when the data-link switching (DLSw) feature is configured, allows remote attackers to cause a denial of service (device crash) by sending a sequence of malformed packets and leveraging a "narrow timing window," aka Bug ID CSCtf74999, a different vulnerability than CVE-2007-0199, CVE-2008-1152, and CVE-2009-0629.
How severe is CVE-2011-1625?: CVE-2011-1625 has a CVSS 2.0 base score of 5.4, rated medium severity.
Is CVE-2011-1625 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-1625?: CVE-2011-1625 primarily affects Cisco Ios. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-1625?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-1625 published?: CVE-2011-1625 was published on 2011-08-18 and last updated on 2026-06-16.

References

http://www.cisco.com/en/US/docs/cable/cmts/release/notes/12_2sc/uBR7200/122_33_SCF/caveats.html

Affected products (5)

cpe:2.3:o:cisco:ios:12.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.1:*:*:*:*:*:*:*

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