CVE-2026-40250

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Source
https://cve.org/CVERecord?id=CVE-2026-40250
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-40250.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-40250
Aliases
  • GHSA-m5qw-23x2-6phj
Downstream
Related
Published
2026-04-21T01:33:00.212Z
Modified
2026-06-18T03:57:42.738074811Z
Severity
  • 8.4 (High) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
OpenEXR has integer overflow in DWA decoder outBufferEnd pointer arithmetic (missed variant of CVE-2026-34589)
Details

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.4.0 through 3.4.9, 3.3.0 through 3.3.9, and 3.2.0 through 3.2.7, internal_dwa_compressor.h:1040 performs chan->width * chan->bytes_per_element in int32 arithmetic without a (size_t) cast. This is the same overflow pattern fixed in other decoders by CVE-2026-34589/34588/34544, but this line was missed. Versions 3.4.10, 3.3.10, and 3.2.8 contain a fix that addresses internal_dwa_compressor.h:1040.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40250.json",
    "cwe_ids": [
        "CWE-190"
    ],
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/academysoftwarefoundation/openexr

Affected ranges

Type
GIT
Repo
https://github.com/academysoftwarefoundation/openexr
Events
Introduced
456bf42dc2fddb647c0e9ab911656e5cf757fc36
Fixed
f8118548eb5e661c7987201649872642999fa6d1
Introduced
c7d3eac70ccde2c4ed484c6638b83ba872f71464
Fixed
eed3172fb3a6807f59a068d0fc367d540a1789d4
Introduced
20a65852895894434bea88613f6d29ac8e88bd6e
Fixed
67de2bffbd7da508f75fbdc56e6e551a4e31fb83
Database specific 
{
    "cpe": "cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:*",
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "3.2.0"
        },
        {
            "fixed": "3.2.8"
        },
        {
            "introduced": "3.3.0"
        },
        {
            "fixed": "3.3.10"
        },
        {
            "introduced": "3.4.0"
        },
        {
            "fixed": "3.4.10"
        }
    ]
}

Affected versions

v3.*
v3.2.0
v3.2.0-rc4
v3.2.1
v3.2.1-rc
v3.2.2
v3.2.2-rc
v3.2.2-rc2
v3.2.3
v3.2.3-rc
v3.2.3-rc2
v3.2.4
v3.2.4-rc
v3.2.4-rc2
v3.2.5
v3.2.5-rc
v3.2.6
v3.2.6-rc
v3.2.7
v3.2.7-rc
v3.3.0
v3.3.0-rc2
v3.3.1
v3.3.1-rc
v3.3.10-rc
v3.3.2
v3.3.2-rc
v3.3.2-rc2
v3.3.2-rc3
v3.3.2-rc4
v3.3.3
v3.3.3-rc
v3.3.3-rc1
v3.3.4
v3.3.4-rc
v3.3.5
v3.3.5-rc
v3.3.5-rc3
v3.3.6
v3.3.6-rc
v3.3.6-rc2
v3.3.6-rc3
v3.3.6-rc4
v3.3.7
v3.3.7-rc
v3.3.7-rc2
v3.3.7-rc3
v3.3.7-rc4
v3.3.8
v3.3.8-rc
v3.3.9
v3.3.9-rc
v3.3.9-rc2
v3.4.0
v3.4.1
v3.4.1-rc
v3.4.1-rc2
v3.4.2
v3.4.2-rc
v3.4.2-rc2
v3.4.3
v3.4.3-rc
v3.4.3-rc2
v3.4.3-rc3
v3.4.4
v3.4.4-rc
v3.4.4-rc2
v3.4.5
v3.4.5-rc
v3.4.6
v3.4.6-rc
v3.4.7
v3.4.7-rc
v3.4.8
v3.4.8-rc
v3.4.9
v3.4.9-rc

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-40250.json"