CVE-2012-3946
CVE-2012-3946 is a medium-severity vulnerability in Cisco Ios with a CVSS 2.0 base score of 5.0. 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-264.
Key facts
- Severity: Medium (CVSS 2.0 base score 5.0)
- EPSS exploit prediction: 2% (77th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-264
- Affected product: Cisco Ios
- Published:
- Last modified:
Description
Cisco IOS before 15.3(2)S allows remote attackers to bypass interface ACL restrictions in opportunistic circumstances by sending IPv6 packets in an unspecified scenario in which expected packet drops do not occur for "a small percentage" of the packets, aka Bug ID CSCty73682.
Frequently asked questions
- What is CVE-2012-3946?
- Cisco IOS before 15.3(2)S allows remote attackers to bypass interface ACL restrictions in opportunistic circumstances by sending IPv6 packets in an unspecified scenario in which expected packet drops do not occur for "a small percentage" of the packets, aka Bug ID CSCty73682.
- How severe is CVE-2012-3946?
- CVE-2012-3946 has a CVSS 2.0 base score of 5.0, rated medium severity.
- Is CVE-2012-3946 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2012-3946?
- CVE-2012-3946 affects Cisco Ios. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2012-3946?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2012-3946 published?
- CVE-2012-3946 was published on 2014-04-24 and last updated on 2026-06-16.
References
Affected products (1)
- cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*
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