CVE-2026-8669: CWE-787 Out-of-bounds Write in TONYC Imager
CVE-2026-8669 is a medium severity heap out-of-bounds write vulnerability in the TONYC Imager Perl module (versions through 1. 030). It occurs when processing crafted multi-frame GIF files due to improper bounds checking in the GIF parsing code, specifically in the handling of per-row buffers for image frames. This flaw can lead to memory corruption but does not have confirmed exploits in the wild. No official patch or remediation guidance is currently available.
AI Analysis
Technical Summary
The vulnerability in TONYC Imager (up to version 1.030) involves a heap out-of-bounds write triggered by crafted multi-frame GIF files. The Imager::File::GIF component allocates a single buffer sized for the GIF's global screen width and reuses it for each image frame. While one code path validates that the sum of Image.Width and Image.Left does not exceed the global screen width before writing, another code path (the skip-image branch) calls the write function without this check, leading to potential out-of-bounds writes. This is classified as CWE-787.
Potential Impact
Successful exploitation could lead to memory corruption, potentially causing application instability or information disclosure. The CVSS score of 6.5 indicates a medium severity with low complexity and no required privileges or user interaction. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, avoid processing untrusted multi-frame GIF files with the affected versions of TONYC Imager. Monitor vendor channels for updates.
CVE-2026-8669: CWE-787 Out-of-bounds Write in TONYC Imager
Description
CVE-2026-8669 is a medium severity heap out-of-bounds write vulnerability in the TONYC Imager Perl module (versions through 1. 030). It occurs when processing crafted multi-frame GIF files due to improper bounds checking in the GIF parsing code, specifically in the handling of per-row buffers for image frames. This flaw can lead to memory corruption but does not have confirmed exploits in the wild. No official patch or remediation guidance is currently available.
CVSS v3.1
Score 6.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in TONYC Imager (up to version 1.030) involves a heap out-of-bounds write triggered by crafted multi-frame GIF files. The Imager::File::GIF component allocates a single buffer sized for the GIF's global screen width and reuses it for each image frame. While one code path validates that the sum of Image.Width and Image.Left does not exceed the global screen width before writing, another code path (the skip-image branch) calls the write function without this check, leading to potential out-of-bounds writes. This is classified as CWE-787.
Potential Impact
Successful exploitation could lead to memory corruption, potentially causing application instability or information disclosure. The CVSS score of 6.5 indicates a medium severity with low complexity and no required privileges or user interaction. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, avoid processing untrusted multi-frame GIF files with the affected versions of TONYC Imager. Monitor vendor channels for updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- CPANSec
- Date Reserved
- 2026-05-15T11:19:04.001Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a072c17ec166c07b052b15b
Added to database: 5/15/2026, 2:22:15 PM
Last enriched: 5/22/2026, 3:33:30 PM
Last updated: 6/3/2026, 2:24:42 AM
Views: 53
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