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Google Chrome CVE-2026-95280

| EUVDEUVD-2026-89242 HIGH
Race Condition (CWE-362)
2026-09-23 vendor:ubuntu
7.5
CVSS 3.1 · Vendor: vendor:ubuntu
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Lure victim to malicious page
  2. Delivery
    Deliver crafted content triggering race
  3. Exploit
    Win race to corrupt renderer memory
  4. Execution
    Execute code in renderer process
  5. Impact
    Access sensitive browser data

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V15 - Secure Coding and Architecture Concurrency control, locking
MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires the victim to visit or load attacker-controlled web content in a vulnerable Chrome build (any version below 154.0.8037.57 on the affected stable channel); this is the UI:R requirement and is the primary limiting factor. No authentication or privileges are needed (PR:N), and no special non-default browser configuration is indicated. Because this is a race condition (CWE-362), reliable exploitation may require winning a timing window, which can reduce real-world reliability despite the AC:L rating. Impact is contained to the renderer process (S:U), so a separate sandbox escape would be needed for full host compromise.

Impact

This is a genuine high-priority issue by product footprint rather than by exploitation signal. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, base 8.8) describes a network-reachable, low-complexity, unauthenticated flaw requiring only user interaction (visiting a page), with high confidentiality, integrity, and availability impact contained to the renderer (S:U) - the classic drive-by, RCE-class profile for a browser memory-safety bug. The CWE-362 race condition classification is consistent with a scope-unchanged renderer compromise. However, exploitation signals are weak/absent: no EPSS score, no CISA KEV listing, and no public exploit are present in the input, so this is 'no public exploit identified at time of analysis.' The 'Information Disclosure' tag conflicts with the vector, which shows I:H and A:H - this is a full memory-corruption/RCE-class bug, not a mere info-leak, so the tag understates impact. A patch is available from the vendor (Chrome stable channel update, fixed at 154.0.8037.57). Net: prioritize patching due to ubiquitous deployment and drive-by reachability, but there is no evidence of active or automated exploitation at this time.

Exploit ScenarioDerived

An attacker hosts a malicious web page (or injects a malicious ad/iframe into a legitimate site) that triggers the race condition in Chrome's renderer when the victim navigates to it. Winning the race corrupts memory to achieve code execution within the sandboxed renderer process (S:U). No public proof-of-concept is identified in the available data, and exploitation requires the victim to load attacker-controlled content (UI:R).

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.3% exploitation probability (EPSS)

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AnalysisAIv3 – Sep 29, 2026

Google Chrome stable builds earlier than 154.0.8037.57 contain a race condition (CWE-362) that a remote attacker can trigger by getting a victim to load attacker-controlled web content, yielding high confidentiality, integrity, and availability impact within the browser's renderer sandbox. No authentication or special browser configuration is required (CVSS 8.8, AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H), though user interaction - visiting or rendering hostile content - is the primary exploitation prerequisite, and a separate sandbox escape would be needed to reach the host. Exploitation status: no public exploit identified at time of analysis, and there is no CISA KEV listing; the vendor has shipped a fixed release.

Earlier versions of this analysis (2)
v2 Sep 29, 2026 - 19:46 cvss changed CVSS 8.8

A race condition in Google Chrome versions prior to 154.0.8037.57 allows remote attackers who persuade a user to render attacker-controlled web content to trigger memory corruption or disclosure inside the browser, with high impact to confidentiality, integrity, and availability of the affected renderer. Exploitation requires user interaction (UI:R) and is gated by the timing dependence inherent to CWE-362, making it less reliable than a deterministic memory-safety flaw, and the unchanged scope (S:U) indicates impact stays within the browser rather than escaping the sandbox. No public exploit code or confirmed active exploitation has been identified at time of analysis, and a vendor patch shipped in the September 2026 stable channel update.

v1 Sep 24, 2026 - 02:10

CVE-2026-95280 was reported through Canonical's Ubuntu vendor security channel, but the affected package, vulnerable version range, and flaw class are not disclosed in the available data, so no concrete attack scenario can be constructed. With no description, CVSS vector, CWE, or CPE strings to work from, the attack vector, authentication requirements, and user-interaction prerequisites are all unconfirmed, and no public exploit code has been identified at time of analysis. Impact cannot be scored or prioritized until the corresponding Ubuntu Security Notice (USN) or an enriched NVD record is published.

RemediationAI

Apply the vendor fix by upgrading Google Chrome to 154.0.8037.57 or later - Chrome's auto-update mechanism normally reaches this build automatically, and affected users should relaunch the browser and confirm the version at chrome://version; Linux users should update their Chromium/Chrome package to the release built from the same 154.0.8037.57 stable source, per the advisory at http://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0856730748.html (patch status: Vendor-released patch: 154.0.8037.57). Because exploitation requires rendering attacker-controlled content in a vulnerable build, interim risk reduction without patching is limited: blocking untrusted or newly registered domains, restricting browsing to trusted sites, and disabling unnecessary browser extensions reduce exposure but degrade usability and do not address the underlying race - and disabling JavaScript entirely would break most web applications. Users cannot rely on a configuration toggle for this class of bug; the practical compensating measure is to keep the browser sandbox intact (do not run Chrome with --no-sandbox, since site/renderer isolation is what currently confines impact to the renderer process) while packaging the fixed build. No authentication requirements were confirmed as a mitigating factor since the CVSS vector is PR:N.

Affected VersionsENISA

Chrome 154.0.8037.57 <154.0.8037.57

Affected Packages

euvd chrome fix: 154.0.8037.57

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The flaw is a concurrency defect - CWE-362, race condition - in Google Chrome's multi-process browser engine. Chrome splits rendering (Blink), script execution (V8), networking, and browser-process privileges across isolated processes, and correct behavior depends on strict object-lifetime and state synchronization between threads and processes; when a timing window is lost, objects can be read or mutated after their expected state transition, which is why this class of bug typically surfaces as stale-data disclosure or memory-safety corruption. Consistent with the assessed vector (S:U), the impact is scoped to the renderer process rather than the browser process, so full host compromise would require chaining an additional sandbox escape. The high integrity and availability ratings in the CVSS vector indicate the race can do more than leak information - the associated tags list both Information Disclosure and Race Condition - but the assessment notes that reliably winning a timing window can reduce real-world exploit reliability despite the AC:L rating. Affected artifacts are the Chrome stable channel builds identified by EUVD as Chrome 154.0.8037.57 and earlier (the EUVD version string records the fixed build as the boundary), tracked upstream under Chromium issue 560406548 and announced in the Chrome Releases stable-channel advisory.

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Severity by source

Vendor (vendor:ubuntu) PRIMARY 7.5 HIGH
AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
vuln.today AI 8.8 HIGH

Network-reachable via a malicious page (AV:N), no auth (PR:N) but victim must load content (UI:R); renderer-contained memory corruption yields high C/I/A with S:U.

3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SUSE CRITICAL

Primary rating from Vendor (vendor:ubuntu).

CVSS VectorVendor: vendor:ubuntu

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
CVSS changed
Sep 29, 2026 - 20:22 NVD
8.8 (HIGH) 7.5 (HIGH)
CVSS changed
Sep 29, 2026 - 19:22 NVD
8.8 (HIGH)

DescriptionCVE.org

[Unknown description]

Executive ViewAI

Why It Matters

Google Chrome stable builds earlier than 154.0.8037.57 are affected by a high-severity race condition that could allow a malicious website to compromise data confidentiality, integrity, and availability within the browser's renderer sandbox. This affects any employee using an unpatched Chrome instance, potentially exposing sensitive information handled in web applications, but exploitation requires user interaction and no public exploit identified at time of analysis. Leadership should ensure rapid patching to maintain browser security across the organization.

Business Impact: High
Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score
0.3%
Top 81% exploitable
Prevalence
Ubiquitous
Google Chrome is among the most widely deployed browsers worldwide
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.3%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact
High

Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +38
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Race conditions occur when multiple concurrent requests exploit the brief time gap between checking a condition and acting upon it (TOCTOU - Time of Check, Time of Use).

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Vendor StatusVendor

SUSE

Severity: Critical
Product Status
SUSE Package Hub 15 SP7 Fixed
openSUSE Leap 16.0 Fixed
openSUSE Tumbleweed Fixed
SUSE Package Hub 15 SP7 Affected

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