CVE-2026-7951
published 2026-05-06CVE-2026-7951: Out of bounds write in WebRTC in Google Chrome prior to 148.0.7778.96 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML…
PriorityP354high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
0.38%
32.1th percentile
Out of bounds write in WebRTC in Google Chrome prior to 148.0.7778.96 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: Medium)
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| chrome | < 148.0.7778.96 | 148.0.7778.96 | |
| chrome | >= 148.0.7778.96 < 148.0.7778.96 | 148.0.7778.96 | |
| chrome_desktop | — | — |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
cvelistv5v3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vendor_redhat8.8MEDIUM
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GHSA
GHSA-vj5w-9mxg-ppmh: Out of bounds write in WebRTC in Google Chrome prior to 148
ghsa_unreviewed·2026-05-06
CVE-2026-7951 [HIGH] CWE-787 GHSA-vj5w-9mxg-ppmh: Out of bounds write in WebRTC in Google Chrome prior to 148
Out of bounds write in WebRTC in Google Chrome prior to 148.0.7778.96 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: Medium)
VulDB
Google Chrome up to 147.0.7727.138 WebRTC out-of-bounds write (ID 496266)
vuldb·2026-05-06
CVE-2026-7951 [CRITICAL] Google Chrome up to 147.0.7727.138 WebRTC out-of-bounds write (ID 496266)
A vulnerability labeled as critical has been found in Google Chrome. Impacted is an unknown function of the component WebRTC. Executing a manipulation can lead to out-of-bounds write.
This vulnerability is registered as CVE-2026-7951. It is possible to launch the attack remotely. No exploit is available.
The affected component should be upgraded.
CVEList
CVE-2026-7951: Out of bounds write in WebRTC in Google Chrome prior to 148
cvelistv5·2026-05-06·CVSS 8.8
CVE-2026-7951 [HIGH] CWE-787 CVE-2026-7951: Out of bounds write in WebRTC in Google Chrome prior to 148
Out of bounds write in WebRTC in Google Chrome prior to 148.0.7778.96 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: Medium)
Chrome
Stable Channel Update for ChromeOS / ChromeOS Flex: CVE-2026-7951
vendor_chrome·2026-05-19
CVE-2026-7951 Stable Channel Update for ChromeOS / ChromeOS Flex: CVE-2026-7951
Stable Channel Update for ChromeOS / ChromeOS Flex
CVE-2026-7951
Chrome
Stable Channel Update for Desktop: CVE-2026-7950
vendor_chrome·2026-05-05
CVE-2026-7950 [MEDIUM] Stable Channel Update for Desktop: CVE-2026-7950
Stable Channel Update for Desktop
CVE-2026-7950: Out of bounds read and write in GFX. Reported by Google on 2026-03-25 [TBD][ 496266456 ] Medium CVE-2026-7951: Out of bounds write in WebRTC
Reported by soft
Severity: medium
Red Hat
chromium-browser: Out of bounds write in WebRTC
vendor_redhat·2026-05-05·CVSS 8.8
CVE-2026-7951 [MEDIUM] CWE-787 chromium-browser: Out of bounds write in WebRTC
chromium-browser: Out of bounds write in WebRTC
An out of bounds write flaw was found in the WebRTC component of the Chromium browser.
Upstream bug(s):
https://code.google.com/p/chromium/issues/detail?id=496266456
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory.
No detection rules found.
No public exploits indexed.
Bugzilla
libwebrtc vendor-pin lag: 2 confirmed + 6 suspected unpatched Chrome 148 WebRTC CVEs (CVE-2026-9111 Critical UAF, CVE-2026-9120 High UAF)
bugzilla·2026-05-24·CVSS 8.8
CVE-2026-9111 [HIGH] libwebrtc vendor-pin lag: 2 confirmed + 6 suspected unpatched Chrome 148 WebRTC CVEs (CVE-2026-9111 Critical UAF, CVE-2026-9120 High UAF)
libwebrtc vendor-pin lag: 2 confirmed + 6 suspected unpatched Chrome 148 WebRTC CVEs (CVE-2026-9111 Critical UAF, CVE-2026-9120 High UAF)
Steps to reproduce:
## Vendor-Pin Lag Analysis
Firefox's vendored libwebrtc (third_party/libwebrtc/) is pinned to WebRTC M148 branch commit 9600e77d854090669817d22aa2fc941ee92aaacd, last vendored on 2026-04-22.
Between that date and 2026-05-24, Chrome 148 stable channel has published 9 WebRTC CVEs across 3 patch releases. Of these, 1 (CVE-2026-9119, Bug chromium:502661101) is likely already fixed in Firefox — its fix commit 9c2497e landed on M148 Apr 20, before Firefox's pin.
Of the remaining 8, 2 have confirmed post-pin fix CLs (CVE-2026-9111 → 6316b66d, CVE-2026-9120 → 9a7f650b) and 6 are suspected unpatched with fix CLs not yet mapped.
## Eviden
Bugzilla
CVE-2026-7951 chromium-browser: Out of bounds write in WebRTC
bugzilla·2026-05-06
CVE-2026-7951 [MEDIUM] CVE-2026-7951 chromium-browser: Out of bounds write in WebRTC
CVE-2026-7951 chromium-browser: Out of bounds write in WebRTC
Out of bounds write in WebRTC in Google Chrome prior to 148.0.7778.96 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: Medium)
Rapid7
Patch Tuesday - May 2026
blogs_rapid7·2026-05-13·CVSS 10.0
CVE-2026-41089 [CRITICAL] Patch Tuesday - May 2026
Microsoft is publishing 137 vulnerabilities on May 2026 Patch Tuesday . Microsoft is not aware of exploitation in the wild or public disclosure for any of these vulnerabilities. So far this month, Microsoft has provided patches to address 133 browser vulnerabilities, which are not included in the Patch Tuesday count above.
## Windows Netlogon: critical RCE
Anyone responsible for securing a domain controller should prioritize remediation of CVE-2026-41089 , which is a critical stack-based buffer overflow in Windows Netlogon with a CVSS v3 base score of 9.8. Exploitation leads to execution in the context of the Netlogon service, so that’s SYSTEM privileges on the domain controller. For most pentesters, that’s the point at which the customer report more or less writes itself. No privileges
2026-05-06
Published