MediumFix available
openjpeg2 — security advisory
A flaw was found in OpenJPEG’s encoder in the opj_dwt_calc_explicit_stepsizes() function. This flaw allows an attacker who can supply crafted input to decomposition levels to cause a buffer overflow. The highest threat from this vulnerability is to system availability.
- Products
- openjpeg2
- Affected versions
- Not specified
- Fixed versions
- 2.4.0-1
- CVEs
- CVE-2020-27824
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 13:15 UTC · Revision 1
Source evidence
A flaw was found in OpenJPEG’s encoder in the opj_dwt_calc_explicit_stepsizes() function. This flaw allows an attacker who can supply crafted input to decomposition levels to cause a buffer overflow. The highest threat from this vulnerability is to system availability.
osv:DEBIAN-CVE-2020-27824
openjpeg2
Fixed versions: 2.4.0-1
openjpeg2
Fixed versions: 2.4.0-1
openjpeg2
Fixed versions: 2.4.0-1
Complete source record
{
"id": "f4d3793a7fd8b1f4b2a07f41d1b8efc3ca4f32960b13f13dfe8fb5033a94ec5b",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2020-27824",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2020-27824",
"summary": "A flaw was found in OpenJPEG’s encoder in the opj_dwt_calc_explicit_stepsizes() function. This flaw allows an attacker who can supply crafted input to decomposition levels to cause a buffer overflow. The highest threat from this vulnerability is to system availability.",
"evidence": "osv:DEBIAN-CVE-2020-27824",
"products": [
{
"name": {
"value": "openjpeg2",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.4.0-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "openjpeg2",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
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"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
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"evidence": "/affected/2/package/name"
},
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"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2020-27824",
"aliases": [
"DEBIAN-CVE-2020-27824"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
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}
],
"package": {
"name": "openjpeg2",
"purl": "pkg:deb/debian/openjpeg2?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-27824.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
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{
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}
],
"package": {
"name": "openjpeg2",
"purl": "pkg:deb/debian/openjpeg2?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-27824.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
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{
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{
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}
],
"package": {
"name": "openjpeg2",
"purl": "pkg:deb/debian/openjpeg2?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-27824.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-26T12:02:12.984340684Z",
"provider": "osv",
"upstream": [
"CVE-2020-27824"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2020-27824"
]
},
"related_cves": [
{
"value": "CVE-2020-27824",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 452037,
"published_at": "2021-05-13T14:15:17.557+00:00"
}