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Fencer Intel
medium 5.5

CVE-2026-15166 json

Stack-based Buffer Overflow in Wireshark

published 4mo ago modified 15d ago also EUVD-2026-42423

cvss
5.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 3%
public exploits
0
none known

Summary

IEEE 802.11 protocol dissector crash in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service

Patch / fix

  • Wireshark Foundation Wireshark 4.4.17, 4.6.7
  • wireshark Debian 13 4.4.18-0+deb13u1
  • wireshark Debian 14 4.6.9-1

debian advisories DEBIAN-CVE-2026-15166

  • wireshark SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 3.6.24-150000.3.136.1
  • wireshark SLE Module for Desktop Applications 15 SP7, SLE Module for Basesystem 15 SP7 4.6.7-150700.21.11.1
  • wireshark SLES 16.0, SLES for SAP applications 16.0 4.4.17-160000.1.1
  • wireshark SLES for SAP 15 SP6, SLES 15 SP6-LTSS 4.2.14-150600.18.44.1

suse advisories SUSE-SU-2026:4077-1SUSE-SU-2026:3994-1SUSE-SU-2026:3501-1SUSE-SU-2026:23124-1SUSE-SU-2026:23147-1

  • wireshark openSUSE Leap 16.0 4.4.17-160000.1.1
  • wireshark openSUSE Tumbleweed 4.6.7-3.1

opensuse advisories openSUSE-SU-2026:21534-1openSUSE-SU-2026:11460-1

  • wireshark Alpine 3.24 4.6.9-r0

alpine advisories ALPINE-CVE-2026-15166

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Is CVE-2026-15166 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

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-2026-15166 updated cvss 5.7

Wireshark: Wireshark: Denial of Service via IEEE 802.11 protocol dissector crash

  • Red Hat Enterprise Linux 10 wireshark
    affected: workaround, no fix available “To mitigate this issue, avoid analyzing untrusted network traffic with Wireshark. Restrict the use of Wireshark to trusted environments where the source of network packets can be verified.”

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

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
4mo ago

Exploit prediction

0.14% chance of exploitation in the next 30 days, higher than 3% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • gitlab.com https://gitlab.com/wireshark/wireshark/-/work_items/21391 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

  • Wireshark Foundation Wireshark

Classification

Weakness
  • CWE-121 Stack-based Buffer Overflow

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.