The IPv6 implementation on Cisco Adaptive Security Appliances (ASA) 5580 series devices with software before 8.1(2) exposes IP services on…

published 2010-06-29 16y ago modified 2026-06-16 4mo ago also EUVD-2009-4876

cvss: 5.0; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.8%; EPSS 1.8% chance of exploitation in 30 days, percentile 78%
public exploits: 0; none known

The IPv6 implementation on Cisco Adaptive Security Appliances (ASA) 5580 series devices with software before 8.1(2) exposes IP services on the "far side of the box," which might allow remote attackers to bypass intended access restrictions via IPv6 packets, aka Bug ID CSCso58622.

Patch / fix

links 1

cisco.com/en/US/docs/security/asa/asa81/release/notes/asarn812.html patch

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Exploit prediction

1.79% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness

CWE-264 Permissions, Privileges, and Access Controls

References

cisco.com /en/US/docs/security/asa/asa81/release/notes/asarn812.html
patch

Sources

CVE List CVE-2009-4913
NVD CVE-2009-4913

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