CVE-2026-33328
MEDIUM 6.8 ALL-YEARSlibvips is a fast image processing library with low memory needs. On 32-bit systems in versions before and including 8.18.0, the `gifload` operation could incorrectly determine dimensions leading to an integer overflow. This has been patched in version 8.18.1.
No known exploitation, public exploit, or elevated probability at this time. Track for changes.
Exploitation likelihood
0.1%chance of exploitation in 30 days · 4th percentile
Impact if exploited
6.8CVSS 4.0 · MEDIUM · CNA
- ConfidentialityNone
- IntegrityNone
- AvailabilityHigh
What an attacker needs
- ⚠Access: Requires local access to the host
- ⚠Privileges: Requires a low-privilege account
- ✓User interaction: No user interaction needed
- ✓Complexity: No special conditions — reliably repeatable
- ✓Requirements: No special attack requirements
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept
No public PoC is currently catalogued.
Search for new PoCs
Search GitHub now — results may be empty or unverified.
Tracked sources are checked weekly for the full archive, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.
Weakness (CWE)
- CWE-190: : Integer Overflow or Wraparound
CVSS vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
References and research data (JSON)
Vendor product assessments
All currently supported Red Hat products · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
Red Hat · CVE-2026-33328 · Updated 2026-08-13T17:44:27+00:00
Known Affected Software Configurations
| Vendor | Product | Version range |
|---|---|---|
| Libvips | Libvips | < 8.18.1 |
All CVSS metrics
- MEDIUM 6.8 v4.0 · CNA Primary
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - MEDIUM 6.8 v4.0 · NVD Secondary
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - MEDIUM 5.5 v3.1 · NVD Primary
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References
Patches & mitigations
- https://github.com/libvips/libvips/security/advisories/GHSA-r98w-4fp7-m9c7 CVE record · GitHub_M · Updated 2026-07-20T16:22:22.378Z
NVD · CVE-2026-33328 · Updated 2026-08-19T19:19:16.593
Red Hat · CVE-2026-33328 · Updated 2026-08-13T17:44:27+00:00 - https://github.com/libvips/libvips/pull/4935 CVE record · GitHub_M · Updated 2026-07-20T16:22:22.378Z
NVD · CVE-2026-33328 · Updated 2026-08-19T19:19:16.593
Red Hat · CVE-2026-33328 · Updated 2026-08-13T17:44:27+00:00 - https://github.com/libvips/libvips/commit/9b633e45abfcf1fc4c84847007c81805193c0969 CVE record · GitHub_M · Updated 2026-07-20T16:22:22.378Z
NVD · CVE-2026-33328 · Updated 2026-08-19T19:19:16.593
Red Hat · CVE-2026-33328 · Updated 2026-08-13T17:44:27+00:00
Advisories
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33328.json Red Hat · CVE-2026-33328 · Updated 2026-08-13T17:44:27+00:00
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-46001 EUVD · EUVD-2026-46001
Technical & other
- https://access.redhat.com/security/cve/CVE-2026-33328 Red Hat · CVE-2026-33328 · Updated 2026-08-13T17:44:27+00:00
- https://www.cve.org/CVERecord?id=CVE-2026-33328 Red Hat · CVE-2026-33328 · Updated 2026-08-13T17:44:27+00:00
- https://nvd.nist.gov/vuln/detail/CVE-2026-33328 Red Hat · CVE-2026-33328 · Updated 2026-08-13T17:44:27+00:00
Sources: NVD · CVE.org · All sources and attribution · EPSS