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Fencer Intel
low 2.6

CVE-2011-3266 json

The proto_tree_add_item function in Wireshark 1.6.0 through 1.6.1 and 1.4.0 through 1.4.8, when the IKEv1 protocol dissector is used, allow…

published 2011-08-24 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-3230

cvss
2.6
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.3%
EPSS 2.3% chance of exploitation in 30 days, percentile 83%
public exploits
0
none known

Summary

The proto_tree_add_item function in Wireshark 1.6.0 through 1.6.1 and 1.4.0 through 1.4.8, when the IKEv1 protocol dissector is used, allows user-assisted remote attackers to cause a denial of service (infinite loop) via vectors involving a malformed IKE packet and many items in a tree.

Patch / fix

  • wireshark Debian 14, Debian 13, Debian 12 1.6.2-1

debian advisories DEBIAN-CVE-2011-3266

  • wireshark openSUSE Tumbleweed 2.2.2-1.1

opensuse advisories openSUSE-SU-2024:10199-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-3266 updated cvss 2.9

Wireshark proto_tree_add_item DoS

  • Red Hat Enterprise Linux 4 wireshark Red Hat Enterprise Linux 5 wireshark Red Hat Enterprise Linux 6 wireshark, wireshark-gnome
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.32% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 2.6 AV:N/AC:H/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-399 Resource Management Errors

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.