HighFix available
pngcheck — security advisory
A global buffer overflow was discovered in pngcheck function in pngcheck-2.4.0(5 patches applied) via a crafted png file.
- Products
- pngcheck
- Affected versions
- 2.3.0-7, 3.0.3-3, 4.0.0+git20250707.6419815-1, 4.0.1-1
- Fixed versions
- 2.3.0-7ubuntu0.16.04.1~esm1, 2.3.0-7ubuntu0.18.04.1~esm1, 2.3.0-7ubuntu0.20.04.1
- CVEs
- CVE-2020-35511
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:29 UTC · Revision 1
Source evidence
A global buffer overflow was discovered in pngcheck function in pngcheck-2.4.0(5 patches applied) via a crafted png file.
osv:UBUNTU-CVE-2020-35511
pngcheck
Fixed versions: 2.3.0-7ubuntu0.16.04.1~esm1
pngcheck
Fixed versions: 2.3.0-7ubuntu0.18.04.1~esm1
pngcheck
Fixed versions: 2.3.0-7ubuntu0.20.04.1
pngcheck
Fixed versions: Not specified
pngcheck
Fixed versions: Not specified
pngcheck
Fixed versions: Not specified
pngcheck
Fixed versions: Not specified
Complete source record
{
"id": "fb198d84dc7dcba33af473042de70bb9ec392aff22b9f855c780af2eeaa42fd6",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-35511",
"method": "structured",
"payload": {
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"title": "UBUNTU-CVE-2020-35511",
"summary": "A global buffer overflow was discovered in pngcheck function in pngcheck-2.4.0(5 patches applied) via a crafted png file.",
"evidence": "osv:UBUNTU-CVE-2020-35511",
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{
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"evidence": "/affected/6/versions"
},
{
"value": "4.0.1-1",
"evidence": "/affected/6/versions"
}
]
}
],
"severity": "high",
"structured": {
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"aliases": [
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"metrics": [
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"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
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"events": [
{
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{
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}
]
}
],
"package": {
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"purl": "pkg:deb/ubuntu/pngcheck?arch=source&distro=esm-apps%2Fxenial",
"ecosystem": "Ubuntu:Pro:16.04:LTS"
},
"versions": [
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"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-35511.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "pngcheck",
"binary_version": "2.3.0-7ubuntu0.16.04.1~esm1"
}
],
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
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{
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"package": {
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"versions": [
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{
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},
"versions": [
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],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-35511.json"
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],
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},
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],
"modified": "2026-10-17T12:56:56.175271648Z",
"provider": "osv",
"upstream": [
"CVE-2020-35511"
],
"references": [
"https://ubuntu.com/security/CVE-2020-35511",
"https://ubuntu.com/security/notices/USN-6182-1",
"https://www.cve.org/CVERecord?id=CVE-2020-35511"
]
},
"related_cves": [
{
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],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 356555,
"published_at": "2022-08-23T20:15:00+00:00"
}