5.5

CVE-2026-9759: wireshark foundation wireshark NULL Pointer Dereference

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-9759DEBIAN-CVE-2026-9759
Published 27-05-2026Last modified 27-05-2026
Open JSON

Vulnerability summary

CVE-2026-9759 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in wireshark foundation wireshark. EPSS estimates a 0.09% chance of exploitation in the next 30 days, higher than 0.4% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.09%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 5 · Related 5
OPENSUSE-SU-2026:11460-1OPENSUSE-SU-2026:21534-1SUSE-SU-2026:23124-1SUSE-SU-2026:23147-1SUSE-SU-2026:3501-1

Timeline

  1. 27-05-2026
    PublishedVulnerability first disclosed.
  2. 27-05-2026
    Last modifiedVulnerability information updated.

Description

ROHC protocol dissector crash in Wireshark 4.6.0 to 4.6.5 and 4.4.0 to 4.4.15 allows denial of service

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.09%

Chance of exploitation in the next 30 days

Percentile

0%

Versus all other CVEs

30-day change

0.00 pp

From 0.09% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.09%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • wiresharkAll versions (No fix recorded) | < 4.4.16-0+deb13u1 | < 4.6.6-1
Ubuntu1 product
  • wiresharkAll versions (No fix recorded)
Wireshark1 product
  • wireshark≥ 4.4.0, < 4.4.16 | ≥ 4.6.0, < 4.6.6
Wireshark foundation1 product
  • wireshark≥ 4.6.0, < 4.6.6 | ≥ 4.4.0, < 4.4.16

4 vendors · 4 products

References

5 links