Security readout for executives and security teams
Plain-English summary
CVE-2018-25010 is a libwebp memory-safety flaw described as a heap-based buffer overflow in ApplyFilter() before version 1.0.1. Because libwebp is commonly embedded by other software, exposure depends on where that library is bundled. The provided sources do not include CVSS, active exploitation, or detailed impact evidence.
Executive priority
Treat this as a targeted dependency hygiene issue unless local exposure shows high-risk WebP processing. Prioritize internet-facing or automated image-processing systems first. Urgency is limited by missing severity and exploitation evidence, but memory-safety flaws in media libraries can become broadly relevant through embedded dependencies.
Technical view
The issue is reported in libwebp ApplyFilter() before 1.0.1. The bundle labels it as a heap-based buffer overflow but also lists CWE-125, creating a source inconsistency. References include an OSS-Fuzz issue and an upstream libwebp commit, but the supplied data does not describe exploitability, reachability conditions, or affected downstream products.
Likely exposure
Likely exposure is software or services that process WebP images using a vulnerable libwebp build. The source bundle does not name downstream products, package versions, or platforms. Validate both system packages and vendored copies because embedded libraries may not appear in top-level dependency lists.
Exploitation context
No provided source reports active exploitation, and the CVE is not marked in CISA KEV in the bundle. The OSS-Fuzz reference suggests testing discovered the issue, but the supplied evidence does not establish real-world attacks, public exploit availability, or practical exploit conditions.
Researcher notes
The record has incomplete severity data and a mismatch between the overflow description and CWE-125. It also states “before 1.0.1” while the affected entry lists “libwebp 1.0.1,” so validate against upstream commit and vendor advisories before making definitive version claims.
Mitigation direction
- Inventory libwebp versions in system packages, containers, applications, and vendored dependencies.
- Check upstream and distribution vendor guidance for the confirmed fixed libwebp release.
- Update vulnerable libwebp builds once a vendor-supported fixed package is available.
- Prioritize systems that automatically process untrusted or externally supplied WebP images.
Validation and detection
- Confirm the exact libwebp version used at runtime, not only build-time dependency metadata.
- Check application bundles and containers for statically included libwebp copies.
- Review image-processing services for WebP handling exposed to untrusted users.
- Verify remediation by retesting version inventory after updates or rebuilds.
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-2018-25010 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=1956918CVE reference · x_refsource_MISC
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=9105CVE reference · x_refsource_MISC
- https://chromium.googlesource.com/webm/libwebp/+/1344a2e947c749d231141a295327e5b99b444d63CVE 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.