Google Chrome up to 147.0.7727.117 WebRTC heap-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$5k-$25k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Google Chrome. This issue affects some unknown processing of the component WebRTC. This manipulation causes heap-based overflow. This vulnerability is tracked as CVE-2026-7339. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Google Chrome and classified as critical. Affected by this vulnerability is an unknown functionality of the component WebRTC. The manipulation with an unknown input leads to a heap-based overflow vulnerability. The CWE definition for the vulnerability is CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Heap buffer overflow in WebRTC in Google Chrome prior to 147.0.7727.138 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Medium)

It is possible to read the advisory at chromereleases.googleblog.com. This vulnerability is known as CVE-2026-7339 since 04/28/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 04/30/2026).

The vulnerability scanner Nessus provides a plugin with the ID 310947 (Linux Distros Unpatched Vulnerability : CVE-2026-7339), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 147.0.7727.138 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (310947), EUVD (EUVD-2026-26165) and CERT Bund (WID-SEC-2026-1304). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Google Chrome

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 310947
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-7339

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Chrome 147.0.7727.138

Timelineinfo

04/28/2026 CVE reserved
04/29/2026 +1 days Advisory disclosed
04/29/2026 +0 days VulDB entry created
04/30/2026 +1 days VulDB entry last update

Sourcesinfo

Vendor: google.com
Product: google.com

Advisory: 493957
Status: Confirmed

CVE: CVE-2026-7339 (🔒)
GCVE (CVE): GCVE-0-2026-7339
GCVE (VulDB): GCVE-100-360067
EUVD: 🔒
CERT Bund: WID-SEC-2026-1304 - Google Chrome: Mehrere Schwachstellen

Entryinfo

Created: 04/29/2026 05:46
Updated: 04/30/2026 02:59
Changes: 04/29/2026 05:46 (58), 04/29/2026 08:22 (1), 04/29/2026 16:50 (7), 04/30/2026 02:59 (2)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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