5.5

CVE-2026-5404: wireshark foundation wireshark Classic Buffer Overflow

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-5404DEBIAN-CVE-2026-5404
Published 30-04-2026Last modified 01-05-2026
Open JSON

Vulnerability summary

CVE-2026-5404 is a medium (CVSS 5.5) Classic Buffer Overflow vulnerability in wireshark foundation wireshark. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 2.7% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.14%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 3 · Related 3
OPENSUSE-SU-2026:10686-1SUSE-SU-2026:2969-1SUSE-SU-2026:3501-1

Timeline

  1. 30-04-2026
    PublishedVulnerability first disclosed.
  2. 01-05-2026
    Last modifiedVulnerability information updated.

Description

K12 RF5 file parser crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.14%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

+0.02 pp

From 0.12% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.14%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (gitlab.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • wiresharkAll versions (No fix recorded) | < 4.4.15-0+deb13u1 | < 4.6.5-1
Ubuntu1 product
  • wiresharkAll versions (No fix recorded)
Wireshark1 product
  • wireshark≥ 4.4.0, < 4.4.15 | ≥ 4.6.0, < 4.6.5
Wireshark foundation1 product
  • wireshark≥ 4.6.0, < 4.6.5 | ≥ 4.4.0, < 4.4.15

4 vendors · 4 products

References

5 links