7.5

CVE-2026-76880: wireshark foundation wireshark Out-of-bounds Write

CVSS: 7.5v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-76880DEBIAN-CVE-2026-76880
Published 19-08-2026Last modified 20-08-2026
Open JSON

Vulnerability summary

CVE-2026-76880 is a high (CVSS 7.5) Out-of-bounds Write vulnerability in wireshark foundation wireshark. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.4% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.24%
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 7 · Related 4
OPENSUSE-SU-2026:11579-1OPENSUSE-SU-2026:22014-1RHSA-2026:83546RHSA-2026:83657RHSA-2026:84721SUSE-SU-2026:24013-1

Timeline

  1. 19-08-2026
    PublishedVulnerability first disclosed.
  2. 20-08-2026
    Last modifiedVulnerability information updated.

Description

RRC protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.24%

Chance of exploitation in the next 30 days

Percentile

14%

Versus all other CVEs

30-day change

0.00 pp

From 0.24% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.24%

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) | < 4.4.18-0+deb13u1 | < 4.6.9-1
Ubuntu1 product
  • wiresharkAll versions (No fix recorded)
Wireshark1 product
  • wireshark≥ 4.4.0, < 4.4.18 | ≥ 4.6.0, < 4.6.8
Wireshark foundation1 product
  • wireshark≥ 4.6.0, < 4.6.8 | ≥ 4.4.0, < 4.4.18

4 vendors · 4 products

References

5 links