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Fencer Vulns
medium 4.7

CVE-2026-15173 json

Heap-based Buffer Overflow in Wireshark

published 2026-07-08 4 mo ago modified 2026-10-25 14 d ago also EUVD-2026-42418

cvss
4.7
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 2%
public exploits
0
none known

Summary

pcapng file parser crash in Wireshark 4.6.0 to 4.6.6 allows denial of service

Patch / fix

  • Wireshark Foundation Wireshark 4.6.7
  • wireshark Debian 14 4.6.9-1

debian advisories DEBIAN-CVE-2026-15173

  • wireshark SLE Module for Desktop Applications 15 SP7, SLE Module for Basesystem 15 SP7 4.6.7-150700.21.11.1

suse advisories SUSE-SU-2026:3501-1

  • wireshark openSUSE Tumbleweed 4.6.7-3.1

opensuse advisories openSUSE-SU-2026:11460-1

  • wireshark Alpine 3.24 4.6.9-r0

alpine advisories ALPINE-CVE-2026-15173

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

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-2026-15173 updated

Wireshark: Wireshark: Denial of Service via pcapng file parser crash

  • Red Hat Enterprise Linux 6 wireshark, wireshark-gnome Red Hat Enterprise Linux 7 wireshark, wireshark-gnome
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 wireshark, wireshark-cli Red Hat Enterprise Linux 9 wireshark, wireshark-cli Red Hat Enterprise Linux 10 wireshark
    affected: workaround, no fix available “Fix deferred”

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
4 mo ago

Exploit prediction

0.13% chance of exploitation in the next 30 days, higher than 2% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • gitlab.com https://gitlab.com/wireshark/wireshark/-/work_items/21285 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 4.7 CVSS:3.1/AV:L/AC:H/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-122 Heap-based Buffer Overflow

References

Sources

Fencer Vulns 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.