CVE-2021-20296
MEDIUM
5.3
CVSS Score
Published: April 1, 2021 at 12:00 AM UTC
Updated: June 17, 2026 at 03:33 AM UTC
2 products affected across 2 vendorsDebian LinuxOpenexr
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Severity
MEDIUM5.3
Exploit prediction
EPSS 2%
Description
A flaw was found in OpenEXR in versions before 3.0.0-beta. A crafted input file supplied by an attacker, that is processed by the Dwa decompression functionality of OpenEXR's IlmImf library, could cause a NULL pointer dereference. The highest threat from this vulnerability is to system availability.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Debian Linux· Debiandrupal
95%Affected range stops below 2.4.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.5.4, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (5)
Issue TrackingMailing ListPatchThird Party Advisory
Source: [email protected]
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=24854Issue TrackingPatchThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1939141Mailing ListThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2021/07/msg00001.htmlMailing ListThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2022/12/msg00022.htmlVendor AdvisoryThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202107-27CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- LOW
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-476
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