5.5

CVE-2026-15165: wireshark foundation wireshark Heap-based Buffer Overflow

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-15165DEBIAN-CVE-2026-15165
Published 08-07-2026Last modified 09-07-2026
Open JSON

Vulnerability summary

CVE-2026-15165 is a medium (CVSS 5.5) Heap-based Buffer Overflow vulnerability in wireshark foundation wireshark. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 3% 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 (CVE.org)
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 2
MGASA-2026-0465OPENSUSE-SU-2026:11460-1SUSE-SU-2026:3501-1

Timeline

  1. 08-07-2026
    PublishedVulnerability first disclosed.
  2. 09-07-2026
    Last modifiedVulnerability information updated.

Description

TLS ECH decryptor crash in Wireshark 4.6.0 to 4.6.6 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 0.16% on 20-09-2026

20-09-202620-10-2026
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) | < 4.6.9-1
Ubuntu1 product
  • wiresharkAll versions (No fix recorded)
Wireshark1 product
Wireshark foundation1 product

4 vendors · 4 products

References

5 links