Imager versions before 1.033 for Perl treat unsigned EXIF IFD entry counts as signed
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-789.
Summary
Imager versions before 1.033 for Perl treat unsigned EXIF IFD entry counts as signed. Imager mishandled large EXIF IFD entry count values, treating them as negative numbers. This could lead to an attempt to allocate a block nearly the size of the address space, which fails and kills the process. An attacker could craft an image with EXIF data that terminates a worker process.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Imager (TONYC) Fixed in 1.033
Timeline
- 2026-10-02 Threatist record created from CVE-2026-14454
- 2026-10-03 Alias added: GHSA-j48m-64vj-6rm9
- 2026-10-11 EPSS moved to the 50th–90th percentile
References
More TONYC vulnerabilities
- TI-2026-15600 Out-of-bounds read in TONYC Imager CVSS 3.1HIGH 7.5
- TI-2026-11557 Memory leak in TONYC Imager::File::JPEG CVSS 3.1HIGH 7.5
- TI-2026-07618 Out-of-bounds write in TONYC Imager CVSS 3.1MEDIUM 6.5
- TI-2026-11554 Out-of-bounds read in TONYC Imager CVSS 3.1HIGH 7.1
- TI-2026-07428 Out-of-bounds write in TONYC Imager::File::GIF CVSS 3.1MEDIUM 5.3
Sources
- CVE-2026-14454 · CVE Program
- CVE-2026-14454 · NVD
- FIRST EPSS
- GHSA-j48m-64vj-6rm9 · GitHub Advisory Database · CC BY 4.0
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