Google Chrome up to 148.0.7778.168 on Android Chromecast heap-based overflow

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.3$5k-$25k0.00

Summaryinfo

A vulnerability was found in Google Chrome on Android. It has been declared as critical. This affects an unknown part of the component Chromecast. Such manipulation leads to heap-based overflow. This vulnerability is documented as CVE-2026-9123. The attack needs to be performed locally. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Google Chrome on Android. Affected by this issue is some unknown processing of the component Chromecast. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to 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(). Impacted is confidentiality, integrity, and availability. CVE summarizes:

Heap buffer overflow in Chromecast in Google Chrome on Android, Linux, ChromeOS prior to 148.0.7778.179 allowed a local attacker to execute arbitrary code inside a sandbox via malicious network traffic. (Chromium security severity: Medium)

The advisory is shared for download at chromereleases.googleblog.com. This vulnerability is handled as CVE-2026-9123 since 05/20/2026. The exploitation is known to be easy. The attack needs to be approached locally. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 05/26/2026).

The vulnerability scanner Nessus provides a plugin with the ID 316031 (Linux Distros Unpatched Vulnerability : CVE-2026-9123), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 148.0.7778.179 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (316031) and CERT Bund (WID-SEC-2026-1623). Once again VulDB remains the best source for vulnerability data.

Affected

  • Debian Linux
  • Fedora Linux
  • Google Chrome
  • Microsoft Edge
  • SUSE openSUSE

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

ADP CISA Base Score: 7.5
ADP CISA Vector: 🔒

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 316031
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-9123

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Chrome 148.0.7778.179

Timelineinfo

05/20/2026 Advisory disclosed
05/20/2026 +0 days CVE reserved
05/20/2026 +0 days VulDB entry created
05/26/2026 +6 days VulDB entry last update

Sourcesinfo

Vendor: google.com
Product: google.com

Advisory: chromereleases.googleblog.com
Status: Confirmed

CVE: CVE-2026-9123 (🔒)
GCVE (CVE): GCVE-0-2026-9123
GCVE (VulDB): GCVE-100-364916
CERT Bund: WID-SEC-2026-1623 - Google Chrome und Microsoft Edge: Mehrere Schwachstellen

scip Labs: https://www.scip.ch/en/?labs.20130704

Entryinfo

Created: 05/20/2026 21:59
Updated: 05/26/2026 20:04
Changes: 05/20/2026 21:59 (58), 05/22/2026 03:25 (7), 05/22/2026 04:16 (2), 05/24/2026 00:26 (11), 05/26/2026 20:04 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Are you interested in using VulDB?

Download the whitepaper to learn more about our service!