What is CVE-2026-11645?
Out of bounds read and write in V8 in Google Chrome prior to 149.0.7827.103 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
The record classifies CVE-2026-11645 under weakness classes CWE-125, CWE-787. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs a user to take an action first, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 142 days ago.
Severity and exploitation probability
- CVSS v3.1 base score
- 8.8 — HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS (FIRST)
- 2.4% probability of exploitation in the next 30 days, higher than 83.8% of all scored CVEs
- CISA KEV
- Listed since 2026-06-09, federal remediation deadline 2026-06-23
- Threadlinqs priority
- 9/10 — CISA KEV-listed, which Threadlinqs floors at 9
- Published
- 2026-06-08, last modified 2026-06-10
Is CVE-2026-11645 being exploited?
CISA added CVE-2026-11645 to the Known Exploited Vulnerabilities catalog on 2026-06-09, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2026-06-23 under BOD 22-01. Weaponised exploit code for CVE-2026-11645 is publicly available. 4 public proof-of-concept repositories are tracked for this identifier. It currently carries a trending score of 54 in the Threadlinqs vulnerability feed.
- fevar54/CVE-2026-11645-Out-of-bounds-Read-Write (github)
- 0xBlackash/CVE-2026-11645 (github)
- adamshaikhma/CVE-2026-11645 (github)
- trickest/cve (trickest)
Affected products and versions
- Google: Chrome
How to fix CVE-2026-11645
Because CVE-2026-11645 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2026-06-23. No vendor patch reference has been recorded for CVE-2026-11645 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.
Threat activity tracking CVE-2026-11645
3 tracked threats in the Threadlinqs corpus reference CVE-2026-11645, either in the campaign’s CVE list or as an indicator on the campaign record.
- Google Chrome V8 Out-of-Bounds Read/Write Zero-Day CVE-2026-11645 Exploited in the Wild — HIGH · 2026-06-09
- Google Chrome V8 Zero-Day CVE-2026-11645 Out-of-Bounds Read/Write Exploited in the Wild — CRITICAL · 2026-06-09
- CVE-2026-11645: Actively Exploited V8 Out-of-Bounds Memory Access Zero-Day in Google Chrome — HIGH · 2026-06-09
Sources
Enriched from CVE.org, FIRST EPSS, CISA KEV, GitHub Security Advisories, public proof-of-concept repositories. Last verified by Threadlinqs on .