ExploitedIn CISA KEVFix available

CVE-2026-11645

Q: Is CVE-2026-11645 actively exploited?

Yes. CVE-2026-11645 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-06-23.

Q: What is the CVSS score for CVE-2026-11645?

CVE-2026-11645 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

chromium-browser: Out of bounds memory access in V8

Exploitation confirmed. First attested on 2026-06-09 by CISA-ADP, CISA KEV, GCVE · kevintel.

Published2026-06-09
Fixed in149.0.7827.103
WeaknessCWE-125 · CWE-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

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)

Timeline

dates in UTC

2026-06-09Added to the CISA KEV catalogCISA KEV
2026-06-09Listed as exploited by GCVEGCVE
2026-06-09Exploitation first reportedCISA KEV
2026-06-0900:16CVE publishedNVD
2026-06-0917:47SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 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-2026-11645?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-11645?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Google chromeversion to verify

Branch	Affected	Fixed in	Source
149.0	< 149.0.7827.103	149.0.7827.103	NVD

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

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

CVE-2026-11645 Red Hat Product Security
chromium-browser: Out of bounds memory access in V8

Full record on NVD

Fix

Update Google chrome to 149.0.7827.103
CISA’s required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.due 2026-06-23

Advisories and patches

chromereleases.googleblog.comRelease Notes · Vendor Advisory

Detection

read 2026-10-23 19:24 UTC

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: 4 repositories, unverifiedfevar54/CVE-2026-11645-Out-of-bounds-Read-Writeadamshaikhma/CVE-2026-116450xBlackash/CVE-2026-11645emlinhax/CVE-2026-11645-poc

CISA Known Exploited Vulnerability

Date Added: 2026-06-09
Patch Due Date: 2026-06-23
Ransomware Use: Unknown
Required Action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Sources

NVDCVE recordread 2026-10-23
CISA KEVKEV entry2026-06-09
GCVEexploitation2026-06-09
CISA-ADPSSVC decisionactive2026-06-09
OpenCVESSVC decisionactive—
CISA-ADPCVSS 3.18.82026-06-09
CISA-ADPweakness (CWE)CWE-125, CWE-7872026-06-09
FIRST EPSSEPSS score2.4 %2026-10-23
PoC-in-GitHubproof of concept4read 2026-10-23
Microsoft MSRCadvisory—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published: 2026-06-09
Last Modified: 2026-07-23
NVD status: Analyzed
MSRC Title: Chromium: CVE-2026-11645 Out of bounds memory access in V8

Frequently asked questions

What is CVE-2026-11645?

Is CVE-2026-11645 actively exploited?

Yes. CVE-2026-11645 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-06-23.

What is the CVSS score for CVE-2026-11645?

CVE-2026-11645 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Running chromium-browser? Hear about its next vulnerability

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this product CISA KEV additions, June 2026 Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

For a threat intelligence platform: malware, C2 and ransomware indicators over STIX/TAXII.
Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
Running this software? Vulnerability monitoring alerts you to new vulnerabilities in your products.

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database