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CVE-2026-8669— Imager versions through 1.030 for Perl allow a heap out of bounds (OOB) write on crafted multi-frame GIF files

Quick assessment

Affected
TONYC Imager
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Imager是Tony Cook个人开发者的一个图像处理程序。 Imager 1.030及之前版本存在缓冲区错误漏洞，该漏洞源于Imager::File::GIF的i_readgif_multi_low函数分配单个每行缓冲区GifRow，其大小基于GIF全局屏幕宽度SWidth并在文件中每个图像间重用，跳过图像分支在调用DGifGetLine时未进行宽度检查，可能导致在特制多帧GIF文件上发生堆越界写入。

AI Predicted 8.6 Difficulty: Hard EPSS 0.36% · P27

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
TONYC Imager ≤ 1.030 affected
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I. Basic Information for CVE-2026-8669

Vulnerability Information
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Vulnerability Title
Imager versions through 1.030 for Perl allow a heap out of bounds (OOB) write on crafted multi-frame GIF files
Source: CVE Program / CVE List V5
Vulnerability Description
Imager versions through 1.030 for Perl allow a heap out of bounds (OOB) write on crafted multi-frame GIF files. Imager::File::GIF's i_readgif_multi_low allocates a single per-row buffer GifRow sized for the GIF's global screen width 'SWidth' and reuses it across every image in the file. The page-match branch validates Image.Width + Image.Left > SWidth before each DGifGetLine write, but the parallel skip-image branch at imgif.c:790-805 calls DGifGetLine(GifFile, GifRow, Width) with no such check.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
Imager 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Imager是Tony Cook个人开发者的一个图像处理程序。 Imager 1.030及之前版本存在缓冲区错误漏洞，该漏洞源于Imager::File::GIF的i_readgif_multi_low函数分配单个每行缓冲区GifRow，其大小基于GIF全局屏幕宽度SWidth并在文件中每个图像间重用，跳过图像分支在调用DGifGetLine时未进行宽度检查，可能导致在特制多帧GIF文件上发生堆越界写入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
TONYC Imager 0 ~ 1.030 -

II. Public POCs for CVE-2026-8669

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III. Intelligence Information for CVE-2026-8669

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Patches & Fixes for CVE-2026-8669 (1)

Other References for CVE-2026-8669 (1)

IV. Related Vulnerabilities

Same product: Imager
Same vendor: TONYC
Same weakness: CWE-787

V. Comments for CVE-2026-8669

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