7.5

CVE-2026-3203: wireshark foundation wireshark Buffer Over-read

CVSS: 7.5v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-3203DEBIAN-CVE-2026-3203
Published 25-02-2026Last modified 17-09-2026
Open JSON

Vulnerability summary

CVE-2026-3203 is a high (CVSS 7.5) Buffer Over-read vulnerability in wireshark foundation wireshark. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 18% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.27%
0%100%
Low · +0.11 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 4 · Related 2
OPENSUSE-SU-2026:10274-1RHSA-2026:26182RHSA-2026:9666SUSE-SU-2026:1169-1

Timeline

  1. 25-02-2026
    PublishedVulnerability first disclosed.
  2. 17-09-2026
    Last modifiedVulnerability information updated.

Description

RF4CE Profile protocol dissector crash in Wireshark 4.6.0 to 4.6.3 and 4.4.0 to 4.4.13 allows denial of service

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.27%

Chance of exploitation in the next 30 days

Percentile

18%

Versus all other CVEs

30-day change

+0.11 pp

From 0.16% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.27%

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) | < 4.4.14-0+deb13u1 | < 4.6.4-1
Ubuntu1 product
  • wiresharkAll versions (No fix recorded)
Wireshark1 product
  • wireshark≥ 4.4.0, < 4.4.14 | ≥ 4.6.0, < 4.6.4
Wireshark foundation1 product
  • wireshark≥ 4.6.0, < 4.6.4 | ≥ 4.4.0, < 4.4.14

4 vendors · 4 products

References

5 links