Security readout for executives and security teams
Plain-English summary
LibRaw has a memory corruption flaw when handling Canon CR3 image files. Systems are mainly exposed if they parse untrusted raw photos through LibRaw or software embedding it. The provided sources do not give CVSS, confirmed active exploitation, or a named fixed release.
Executive priority
Prioritize remediation where LibRaw processes customer, partner, or internet-supplied images. For isolated internal photo workflows, track through normal dependency patching. Evidence is incomplete, so avoid treating this as confirmed exploited without new vendor or KEV data.
Technical view
CVE-2020-35534 affects crxFreeSubbandData() in libraw/src/decoders/crx.cpp during CR3 processing. Listed affected versions include LibRaw 0.21-Beta1 and 0.20.0 through 0.20.2, including 0.20-RC2. The CVE maps to CWE-400, but the source description also states memory corruption.
Likely exposure
Exposure is likely in image import, media processing, DAM, forensic, web upload, or desktop applications that include affected LibRaw versions and accept CR3 files from users or external sources.
Exploitation context
The provided bundle contains no CISA KEV entry and no cited evidence of active exploitation. Risk depends on whether attackers can supply CR3 files to software using affected LibRaw builds.
Researcher notes
The CVE record is sparse: no CVSS vector, no exploit status, and no fixed release name in the supplied data. The GitHub issue and commit are the key technical anchors. Validate impact against the exact downstream build and backport status.
Mitigation direction
- Inventory applications and packages that bundle or link LibRaw.
- Check whether deployed LibRaw matches the affected 0.20.x or 0.21-Beta1 versions.
- Update LibRaw or dependent software using vendor guidance for the referenced fix.
- Restrict untrusted CR3 processing until patched where exposure is external.
- Monitor media-processing services for crashes or abnormal resource use.
Validation and detection
- Confirm the LibRaw version in system packages and embedded application dependencies.
- Review SBOMs or build manifests for bundled LibRaw copies.
- Identify workflows that accept CR3 files from external users.
- Verify updates include the upstream corrective commit or vendor backport.
- Check logs for crashes during CR3 image processing.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-400: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2020-35534 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/LibRaw/LibRaw/issues/279CVE reference · x_refsource_MISC
- https://github.com/LibRaw/LibRaw/commit/e41f331e90b383e3208cefb74e006df44bf3a4b8CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Uncontrolled Resource Consumption
Uncontrolled Resource Consumption represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.