Buffer overflow in Sshock Afflib
CVE-2026-119601
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/sshock/AFFLIBv3/issues/61 (issue-tracking)
- github.com/sshock/AFFLIBv3/blob/v3.7.22/lib/afflib_pages.cpp (technical-description)
- hackmd.io/@haindpwn/afflib-aff-get-page-sector-fill-oob-write (third-party-advisory)
- github.com/sshock/AFFLIBv3 (product)
- www.vulncheck.com/advisories/afflib-through-3.7.22-heap-out-of-bounds-write-in-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-119601?
- CVE-2026-119601 is a medium-severity vulnerability in Sshock Afflib, classified under Out-of-bounds Write. CVSS score: 6.1/10. Published 2026-10-30.
- How severe is CVE-2026-119601?
- Medium severity. CVSS v3 base score is 6.1 out of 10.