Security readout for executives and security teams
pngcheck 2.4.0 has a memory-safety flaw that can be triggered by a specially crafted PNG file. The provided sources do not quantify impact or severity, but any tool that parses untrusted files deserves attention because failures may occur before human review. Exposure is most likely where pngcheck 2.4.0 processes PNG files from users, customers, email, CI artifacts, or content pipelines. Systems without pngcheck, or only checking trusted local files, have lower practical exposure. Treat as a targeted remediation item for file-processing environments, not a confirmed emergency. Prioritize internet-facing upload, content validation, and automation systems that process PNGs from untrusted sources. Mitigation focus: Inventory systems and pipelines using pngcheck.; Upgrade pngcheck using vendor or distribution security packages.; For Debian systems, review DSA-5300 and DLA 3238-1..
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-126: 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-2020-35511 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
- DSA-5300CVE reference · vendor-advisory
- [debian-lts-announce] 20221213 [SECURITY] [DLA 3238-1] pngcheck security updateCVE reference · mailing-list
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.
Buffer Over-read
Buffer Over-read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.