CVE-2026-4463
published 2026-03-20CVE-2026-4463: Heap buffer overflow in WebRTC in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML…
PriorityP350high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
0.30%
22.4th percentile
Heap buffer overflow in WebRTC in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| chromium | chromium | >= 0 < 146.0.7680.153-1~deb12u1 | 146.0.7680.153-1~deb12u1 |
| chromium | chromium | >= 0 < 146.0.7680.153-1~deb13u1 | 146.0.7680.153-1~deb13u1 |
| chromium | chromium | >= 0 < 146.0.7680.153-1 | 146.0.7680.153-1 |
| debian | chromium | < chromium 146.0.7680.153-1~deb12u1 (bookworm) | chromium 146.0.7680.153-1~deb12u1 (bookworm) |
| chrome | < 146.0.7680.153 | 146.0.7680.153 | |
| chrome | >= 146.0.7680.153 < 146.0.7680.153 | 146.0.7680.153 | |
| chrome_chrome | — | — | |
| msrc | microsoft_edge | — | — |
| paloalto | prisma_browser | — | — |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
osv8.8HIGH
vendor_debian8.8HIGH
vendor_msrc8.8HIGH
vendor_redhat8.8HIGH
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Palo Alto
PAN-SA-2026-0007 Chromium and Prisma Browser: Monthly Vulnerability Update (May 2026)
vendor_paloalto·2026-05-13·CVSS 8.8
CVE-2026-4439 [HIGH] PAN-SA-2026-0007 Chromium and Prisma Browser: Monthly Vulnerability Update (May 2026)
PAN-SA-2026-0007 Chromium and Prisma Browser: Monthly Vulnerability Update (May 2026)
Palo Alto Networks incorporated the following Chromium security fixes into our products: https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop.html https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop_28.html https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop_22.html https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop_15.html https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop.html CVE Summary CVE-2026-4439 Out of bounds memory access in WebGL CVE-2026-4440 Out of bounds read and write in WebGL CVE-2026-4441 Use after free in Base CVE-2026-4442 Heap buffer overflow in
Red Hat
chromium-browser: Heap buffer overflow in WebRTC
vendor_redhat·2026-03-18·CVSS 8.8
CVE-2026-4463 [HIGH] CWE-131 chromium-browser: Heap buffer overflow in WebRTC
chromium-browser: Heap buffer overflow in WebRTC
Heap buffer overflow in WebRTC in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
A heap buffer overflow flaw was found in the WebRTC component of the Chromium browser.
Upstream bug(s):
https://code.google.com/p/chromium/issues/detail?id=491358681
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory.
Chrome
Stable Channel Update for Desktop: CVE-2026-4461
vendor_chrome·2026-03-18·CVSS 8.8
CVE-2026-4461 [HIGH] Stable Channel Update for Desktop: CVE-2026-4461
Stable Channel Update for Desktop
CVE-2026-4461: Inappropriate implementation in V8. Reported by Google on 2026-03-07 [TBD][ 491080830 ] High CVE-2026-4462: Out of bounds read in Blink
Reported by heapracer (@heapracer) on 2026-03-09 [TBD][ 491358681 ] High CVE-2026-4463: Heap buffer overflow in WebRTC
Severity: high
Microsoft
Chromium: CVE-2026-4463 Heap buffer overflow in WebRTC
vendor_msrc·2026-03-10·CVSS 8.8
CVE-2026-4463 [HIGH] Chromium: CVE-2026-4463 Heap buffer overflow in WebRTC
Chromium: CVE-2026-4463 Heap buffer overflow in WebRTC
Description: This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.
FAQ: Why is this Chrome CVE included in the Security Update Guide?
The vulnerability assigned to this CVE is in Chromium Open Source Software (OSS) which is consumed by Microsoft Edge (Chromium-based). It is being documented in the Security Update Guide to announce that the latest version of Microsoft Edge (Chromium-based) is no longer vulnerable.
How can I see the version of the browser?
In your Microsoft Edge browser, click on the 3 dots (...) on the very right-hand side of the window
Click on Help and Feedback
Click on About Microsoft Edge
FAQ
Debian
CVE-2026-4463: chromium - Heap buffer overflow in WebRTC in Google Chrome prior to 146.0.7680.153 allowed ...
vendor_debian·2026·CVSS 8.8
CVE-2026-4463 [HIGH] CVE-2026-4463: chromium - Heap buffer overflow in WebRTC in Google Chrome prior to 146.0.7680.153 allowed ...
Heap buffer overflow in WebRTC in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
Scope: local
bookworm: resolved (fixed in 146.0.7680.153-1~deb12u1)
bullseye: open
forky: resolved (fixed in 146.0.7680.153-1)
sid: resolved (fixed in 146.0.7680.153-1)
trixie: resolved (fixed in 146.0.7680.153-1~deb13u1)
OSV
CVE-2026-4463: Heap buffer overflow in WebRTC in Google Chrome prior to 146
osv·2026-03-20·CVSS 8.8
CVE-2026-4463 [HIGH] CVE-2026-4463: Heap buffer overflow in WebRTC in Google Chrome prior to 146
Heap buffer overflow in WebRTC in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
GHSA
GHSA-7fq3-jxq5-7256: Heap buffer overflow in WebRTC in Google Chrome prior to 146
ghsa_unreviewed·2026-03-20
CVE-2026-4463 [HIGH] CWE-122 GHSA-7fq3-jxq5-7256: Heap buffer overflow in WebRTC in Google Chrome prior to 146
Heap buffer overflow in WebRTC in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
No detection rules found.
No public exploits indexed.
Wiz
CVE-2026-4463 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 8.8
CVE-2026-4463 [HIGH] CVE-2026-4463 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2026-4463 :
vulnerability analysis and mitigation
Heap buffer overflow in WebRTC in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
Source : NVD
## 8.8
Score
Published March 20, 2026
Severity HIGH
CNA Score 8.8
Has Public Exploit No
Has CISA KEV Exploit No
CISA KEV Release Date N/A
CISA KEV Due Date N/A
Exploitation Probability Percentile (EPSS) 20.8
Exploitation Probability (EPSS) 0.1
Affected packages and libraries
chromium-headless-debuginfo
chromium-qt5-ui
Sources
Alpine 3.23, edge Severity HIGH Has Fix Added at: Mar 29, 2026
Debian 11 Severity HIGH No Fix Added at: Mar 20, 2026
Debian 12, 13, 14 Severity HIGH Has Fix Added at: Mar 20, 2026
E
Bugzilla
CVE-2026-0865 cpython: wsgiref.headers.Headers allows header newline injection in Python
bugzilla·2026-01-20·CVSS 5.9
CVE-2026-0865 [MEDIUM] CVE-2026-0865 cpython: wsgiref.headers.Headers allows header newline injection in Python
CVE-2026-0865 cpython: wsgiref.headers.Headers allows header newline injection in Python
User-controlled header names and values containing newlines can allow injecting HTTP headers.
Discussion:
This issue has been addressed in the following products:
Red Hat Enterprise Linux 8
Via RHSA-2026:2128 https://access.redhat.com/errata/RHSA-2026:2128
---
This issue has been addressed in the following products:
Red Hat Enterprise Linux 8
Via RHSA-2026:4463 https://access.redhat.com/errata/RHSA-2026:4463
---
This issue has been addressed in the following products:
Red Hat Enterprise Linux 8
Via RHSA-2026:4473 https://access.redhat.com/errata/RHSA-2026:4473
---
This issue has been addressed in the following products:
Red Hat Enterprise Linux 10
Via RHSA-2026:4713 https://access.redh
2026-03-20
Published