Security readout for executives and security teams
Plain-English summary
This is a memory safety flaw in libwebp, a library used to process WebP images. Versions before 1.0.1 are reported vulnerable in ShiftBytes(). A malformed image could affect software that uses the library, but the supplied sources do not provide CVSS, product-specific impact, or confirmed exploitation.
Executive priority
Treat this as a dependency hygiene and image-processing exposure issue. Urgency is higher where untrusted users can upload or submit WebP images. Because severity and exploitation evidence are incomplete, prioritize verified exposed systems over broad emergency response.
Technical view
The CVE describes a heap-based buffer overflow in libwebp before 1.0.1, specifically in ShiftBytes(). The bundle also lists CWE-125, which suggests an out-of-bounds read classification mismatch. Evidence points to an oss-fuzz-discovered issue and an upstream libwebp commit, but detailed exploitability and affected downstream products are not provided.
Likely exposure
Exposure is most likely in applications, services, or embedded products that process WebP images using libwebp versions before 1.0.1. Downstream package versions may not map directly to upstream versions, so teams should verify vendor package status rather than rely only on application names.
Exploitation context
The source bundle says KEV is false, and no cited source states active exploitation. The issue came from public vulnerability and fuzzing references, but the bundle does not provide exploit maturity, attack prerequisites, or real-world abuse evidence.
Researcher notes
Key gaps are absent CVSS, limited downstream impact detail, and a CWE mismatch between heap overflow wording and CWE-125. Research should focus on confirming exact libwebp version lineage, whether vendor backports include the upstream fix, and where untrusted WebP parsing occurs.
Mitigation direction
- Inventory software and containers that include libwebp.
- Check vendor advisories for fixed downstream libwebp packages.
- Update libwebp builds using versions before 1.0.1 where supported.
- Prioritize exposed image-processing services and user-upload paths.
- Monitor vendor guidance for distribution-specific backports.
Validation and detection
- Confirm libwebp versions in runtime images and build dependencies.
- Review SBOMs for direct or bundled libwebp copies.
- Check vendor package changelogs for CVE-2018-25013 fixes.
- Identify services accepting untrusted WebP image content.
- Verify remediation through dependency scans after updates.
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-2018-25013 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://bugzilla.redhat.com/show_bug.cgi?id=1956926CVE reference · x_refsource_MISC
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=9417CVE reference · x_refsource_MISC
- https://chromium.googlesource.com/webm/libwebp/+/907208f97ead639bd521cf355a2f203f462eade6CVE 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.
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.