USN-8639-1: libpng Ubuntu

CVSS: UnknownPublished
Published 17-08-2026Last modified 18-08-2026
Open JSON

Vulnerability summary

USN-8639-1 is a vulnerability in libpng Ubuntu with no CVSS score yet.

Overall risk
0/100
0100
Minimal · default modelHow is this calculated?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
Not scored
0%100%
No EPSS score yet
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 7
CVE-2016-10087CVE-2018-14048CVE-2019-7317CVE-2026-33416CVE-2026-33636CVE-2026-34757

Timeline

  1. 17-08-2026
    PublishedVulnerability first disclosed.
  2. 18-08-2026
    Last modifiedVulnerability information updated.

Description

libpng, libpng1.6 vulnerabilities Patrick Keshishian discovered that libpng incorrectly handled certain text chunks. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 16.04 LTS. (CVE-2016-10087) It was discovered that libpng incorrectly handled certain malformed images. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-14048) It was discovered that libpng incorrectly handled memory when freeing certain images. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 16.04 LTS. (CVE-2019-7317) It was discovered that libpng incorrectly handled memory when processing certain images. An attacker could possibly use this issue to cause a denial of service, or execute arbitrary code. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2026-33416) It was discovered that libpng incorrectly handled certain images. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 20.04 LTS. (CVE-2026-33636) It was discovered that libpng incorrectly handled memory when processing certain images. An attacker could possibly use this issue to cause a denial of service or obtain sensitive information. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2026-34757) Seung Min Shin discovered that libpng incorrectly handled certain animated images. An attacker could possibly use this issue to cause libpng to misinterpret image data. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2026-40930)

CVSS metrics

Risk metrics not yet published.

EPSS trend

No EPSS score has been published for this record yet.

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

No weakness data has been published for this record.

Affected systems

Ubuntu2 products
  • libpng< 1.2.50-1ubuntu2.14.04.3+esm2 | < 1.2.54-1ubuntu1.1+esm3
  • libpng1.6< 1.6.20-2ubuntu0.1~esm4 | < 1.6.34-1ubuntu0.18.04.2+esm3 | < 1.6.37-2ubuntu0.1~esm3 | < 1.6.37-3ubuntu0.6

1 vendor · 2 products

References

8 links