Security readout for executives and security teams
Plain-English summary
CVE-2020-35533 is an out-of-bounds read in LibRaw, a library used to parse RAW/DNG image files. A crafted image could cause unsafe memory reads when processed. Business urgency depends on whether systems accept or automatically process untrusted image files.
Executive priority
Prioritize remediation where LibRaw processes untrusted images or operates in customer-facing upload paths. If LibRaw is only used offline with trusted files, urgency is lower but patching remains appropriate.
Technical view
The issue is CWE-125 in LibRaw::adobe_copy_pixel() in src/decoders/dng.cpp while reading image data. The source bundle lists LibRaw 0.21-Beta1, 0.20.2, 0.20.1, 0.20.0, and 0.20-RC2 as affected, with an upstream commit and Debian LTS security update referenced.
Likely exposure
Exposure is most likely in image-processing services, media pipelines, desktop tools, or backend applications that embed LibRaw and process RAW or DNG files from users, partners, email attachments, or automated content feeds.
Exploitation context
The sources describe a file-parsing memory read issue but do not provide CVSS, confirmed exploitation, or KEV listing. Treat exploitation as possible through malicious image input, but there is no cited evidence of active exploitation.
Researcher notes
Evidence is limited to the CVE record, LibRaw issue, upstream commit, and Debian LTS advisory. The bundle does not include CVSS details, exploit maturity, or full fixed-version mapping beyond referenced remediation sources.
Mitigation direction
- Inventory applications and packages that include LibRaw.
- Upgrade LibRaw using vendor guidance or packages containing the upstream fix.
- Apply Debian LTS DLA 3113-1 where relevant.
- Restrict untrusted RAW/DNG processing until patched.
- Run image parsers with least privilege and isolation.
Validation and detection
- Check deployed LibRaw versions against the affected version list.
- Confirm package changelogs reference CVE-2020-35533 or the upstream fix commit.
- Identify services that accept RAW or DNG uploads.
- Review crash reports from image parsing components.
- Verify patched systems still process expected image workflows.
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-125: 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-2020-35533 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/273CVE reference · x_refsource_MISC
- https://github.com/LibRaw/LibRaw/commit/a6937d4046a7c4742b683a04c8564605fd9be4fbCVE reference · x_refsource_MISC
- [debian-lts-announce] 20220916 [SECURITY] [DLA 3113-1] libraw security updateCVE reference · mailing-list, x_refsource_MLIST
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.
Out-of-bounds Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.