Medium
openexr — security advisory
An integer overflow leading to a heap-buffer overflow was found in OpenEXR in versions before 3.0.1. An attacker could use this flaw to crash an application compiled with OpenEXR.
- Products
- openexr
- Affected versions
- 2.2.1-4.1ubuntu1, 2.3.0-6, 2.3.0-6build1, 2.3.0-6ubuntu0.1, 2.3.0-6ubuntu0.2, 2.3.0-6ubuntu0.3, 2.3.0-6ubuntu0.5, 2.3.0-6ubuntu0.5+esm1, 2.3.0-6ubuntu0.5+esm2, 2.5.4-2, 2.5.7-1, 2.5.7-1ubuntu0.1~esm1, 2.5.7-1ubuntu0.1~esm2, 3.1.13-2, 3.1.13-2build1, 3.1.13-2ubuntu0.26.04.1~esm1, 3.1.5-5.1, 3.1.5-5.1build1, 3.1.5-5.1build2, 3.1.5-5.1build3, 3.1.5-5.1ubuntu0.1~esm1, 3.4.6+ds-4ubuntu3
- Fixed versions
- Not specified
- CVEs
- CVE-2021-26945
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:37 UTC · Revision 1
Source evidence
An integer overflow leading to a heap-buffer overflow was found in OpenEXR in versions before 3.0.1. An attacker could use this flaw to crash an application compiled with OpenEXR.
osv:UBUNTU-CVE-2021-26945
openexr
Fixed versions: Not specified
openexr
Fixed versions: Not specified
openexr
Fixed versions: Not specified
openexr
Fixed versions: Not specified
openexr
Fixed versions: Not specified
openexr
Fixed versions: Not specified
Complete source record
{
"id": "9c72540c95aa848df9070f91d2a7fa7054b2c3a28c2eb6b4db26f64b3812c253",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2021-26945",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2021-26945",
"summary": "An integer overflow leading to a heap-buffer overflow was found in OpenEXR in versions before 3.0.1. An attacker could use this flaw to crash an application compiled with OpenEXR.",
"evidence": "osv:UBUNTU-CVE-2021-26945",
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{
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"evidence": "/affected/0/versions"
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{
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{
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{
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{
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{
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{
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{
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{
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"affected_versions": [
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{
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},
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"affected_versions": [
{
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{
"value": "3.4.6+ds-4ubuntu3",
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{
"name": {
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"prerequisites": [],
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"affected_versions": [
{
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"evidence": "/affected/5/versions"
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{
"value": "3.1.13-2build1",
"evidence": "/affected/5/versions"
},
{
"value": "3.1.13-2ubuntu0.26.04.1~esm1",
"evidence": "/affected/5/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "UBUNTU-CVE-2021-26945",
"aliases": [
"UBUNTU-CVE-2021-26945"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "negligible"
}
],
"affected": [
{
"ranges": [
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"events": [
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}
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"package": {
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"ecosystem": "Ubuntu:Pro:20.04:LTS"
},
"versions": [
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"2.3.0-6build1",
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"2.3.0-6ubuntu0.2",
"2.3.0-6ubuntu0.3",
"2.3.0-6ubuntu0.5",
"2.3.0-6ubuntu0.5+esm1",
"2.3.0-6ubuntu0.5+esm2"
],
"database_specific": {
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},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libopenexr24",
"binary_version": "2.3.0-6ubuntu0.5+esm2"
},
{
"binary_name": "openexr",
"binary_version": "2.3.0-6ubuntu0.5+esm2"
}
]
}
},
{
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],
"package": {
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"purl": "pkg:deb/ubuntu/openexr?arch=source&distro=esm-apps%2Fjammy",
"ecosystem": "Ubuntu:Pro:22.04:LTS"
},
"versions": [
"2.5.4-2",
"2.5.7-1",
"2.5.7-1ubuntu0.1~esm1",
"2.5.7-1ubuntu0.1~esm2"
],
"database_specific": {
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},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libopenexr25",
"binary_version": "2.5.7-1ubuntu0.1~esm2"
},
{
"binary_name": "openexr",
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},
{
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"package": {
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"ecosystem": "Ubuntu:Pro:24.04:LTS"
},
"versions": [
"3.1.5-5.1",
"3.1.5-5.1build1",
"3.1.5-5.1build2",
"3.1.5-5.1build3",
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},
"ecosystem_specific": {
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{
"binary_name": "libopenexr-3-1-30",
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},
"versions": [
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},
"ecosystem_specific": {
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},
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"ecosystem": "Ubuntu:26.10"
},
"versions": [
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},
"ecosystem_specific": {
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{
"binary_name": "libopenexr-3-4-33",
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}
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},
{
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"ecosystem": "Ubuntu:Pro:26.04:LTS"
},
"versions": [
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"3.1.13-2build1",
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},
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{
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{
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}
],
"modified": "2026-10-17T12:57:12.954601190Z",
"provider": "osv",
"upstream": [
"CVE-2021-26945"
],
"references": [
"https://ubuntu.com/security/CVE-2021-26945",
"https://access.redhat.com/security/cve/CVE-2021-26945",
"https://github.com/AcademySoftwareFoundation/openexr/pull/930",
"https://www.cve.org/CVERecord?id=CVE-2021-26945"
]
},
"related_cves": [
{
"value": "CVE-2021-26945",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 356931,
"published_at": "2021-06-08T12:15:00+00:00"
}