UnratedFix available
libpng1.6 vulnerability
Type: advisorySources: OSV
It was discovered that the libpng simplified API incorrectly handled quantizing RGB images. If a user or automated system were tricked into opening a specially crafted PNG file, an attacker could use this issue to cause libpng to crash, resulting in a denial of service.
- Products
- libpng1.6
- Affected versions
- 1.6.37-3build4, 1.6.37-3build5, 1.6.37-3ubuntu0.1, 1.6.37-3ubuntu0.3, 1.6.40-1, 1.6.40-2, 1.6.40-3, 1.6.42-1, 1.6.43-1, 1.6.43-3, 1.6.43-5build1, 1.6.43-5ubuntu0.1, 1.6.43-5ubuntu0.3, 1.6.43-5ubuntu0.4, 1.6.47-1.1, 1.6.48-1, 1.6.49-1~exp1, 1.6.50-1, 1.6.50-1ubuntu0.1, 1.6.50-1ubuntu0.3, 1.6.50-1~exp1
- Fixed versions
- 1.6.37-3ubuntu0.4, 1.6.43-5ubuntu0.5, 1.6.50-1ubuntu0.4
- CVEs
- CVE-2026-25646
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 17:16 UTC · Revision 1
Source evidence
It was discovered that the libpng simplified API incorrectly handled quantizing RGB images. If a user or automated system were tricked into opening a specially crafted PNG file, an attacker could use this issue to cause libpng to crash, resulting in a denial of service.
osv:USN-8039-1
libpng1.6
Fixed versions: 1.6.37-3ubuntu0.4
libpng1.6
Fixed versions: 1.6.43-5ubuntu0.5
libpng1.6
Fixed versions: 1.6.50-1ubuntu0.4
Complete source record
{
"id": "1677050922f08d10f55e2617c993d7735620321a7394d6b5e66316ec88eb9ba1",
"url": "https://osv.dev/vulnerability/USN-8039-1",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "libpng1.6 vulnerability",
"summary": "It was discovered that the libpng simplified API incorrectly handled quantizing RGB images. If a user or automated system were tricked into opening a specially crafted PNG file, an attacker could use this issue to cause libpng to crash, resulting in a denial of service.",
"evidence": "osv:USN-8039-1",
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{
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"structured": {
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],
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{
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"purl": "pkg:deb/ubuntu/libpng1.6?arch=source&distro=jammy",
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{
"binary_name": "libpng16-16",
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{
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],
"modified": "2026-10-27T04:16:48.247855295Z",
"provider": "osv",
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],
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},
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"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 460205,
"published_at": "2026-02-12T18:00:35+00:00"
}