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Public proof of conceptFix available

CVE-2026-112621

Out‑of‑bounds Write via Malicious Image Processing

A public proof of concept exists; no exploitation attested.

  • Published2026-10-26
  • Fixed in27.2 · 26.7.2
  • WeaknessCWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in Safari 27.2, iOS 26.7.2 and iPadOS 26.7.2, iOS 27.2 and iPadOS 27.2, macOS Golden Gate 27.2, visionOS 27.2. Processing a maliciously crafted image may result in memory corruption.

Timeline

dates in UTC
  1. 2026-10-2620:43CVE publishedCNA
  2. 2026-10-2621:17CVE publishedNVD
  3. 2026-10-3000:45First public proof of conceptPoC-in-GitHub

Observed activity

isMalicious corpus · updated 2026-11-04 15:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-112621?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-112621?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Apple ipados
BranchAffectedFixed in
27.x≥ 27.0, < 27.227.2
26.7< 26.7.226.7.2
Apple iphone os
BranchAffectedFixed in
27.x≥ 27.0, < 27.227.2
26.7< 26.7.226.7.2
Apple macos
BranchAffectedFixed in
27.x≥ 27.0, < 27.227.2

1 more product in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA4 products

As apple, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Apple Safari
    Affected
    • < 27.2fixed in 27.2custom
  • Apple iOS and iPadOS
    Affected
    • < 26.7.2fixed in 26.7.2custom
    • < 27.2fixed in 27.2custom
  • Apple macOS
    Affected
    • < 27.2fixed in 27.2custom
  • Apple visionOS
    Affected
    • < 27.2fixed in 27.2custom

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-10-26

Fix

  1. Update Apple ipados to 27.2 · 26.7.2

Advisories and patches

Detection

read 2026-11-03 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
4 repositories, unverifiedXplo8E/CVE-2026-112621-oob-write-pocAllen-ux-dev/cve-2026-112621-test794pn2s6fh-hub/CVE-2026-112621-PickAstley11/CVE-2026-112621-oob-write-poc
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2026-10-26
Last Modified
2026-11-04
NVD status
Analyzed
GitHub Advisory
GHSA-gm78-c22r-w3hm

Frequently asked questions

What is CVE-2026-112621?

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in Safari 27.2, iOS 26.7.2 and iPadOS 26.7.2, iOS 27.2 and iPadOS 27.2, macOS Golden Gate 27.2, visionOS 27.2. Processing a maliciously crafted image may result in memory corruption.

Is CVE-2026-112621 actively exploited?

Active exploitation of CVE-2026-112621 has not been confirmed. Its EPSS score was 0.2% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-112621?

CVE-2026-112621 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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Sources for this record