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Google Chrome EUVDEUVD-2026-50897

| CVE-2026-17971 HIGH
Out-of-bounds Read (CWE-125)
2026-07-30 Chrome GHSA-3wv5-vww2-4hrq
High
Disputed · 8.8 Vendor: Chrome
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Attack ChainAIDerived

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

  1. Access
    Lure victim to crafted HTML page
  2. Delivery
    Chrome Frame component parses malicious markup
  3. Exploit
    Trigger out-of-bounds read in renderer
  4. Execution
    Leak adjacent heap memory
  5. Impact
    Chain toward potential code execution

Vulnerability Assessment

Weakness
CWE
MITRE ATT&CK

1 technique across 1 tactic: Collection

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 actively load attacker-controlled content - the CVSS UI:R metric and the description's 'crafted HTML page' confirm user interaction (navigating to or rendering a malicious page/iframe) is mandatory; there is no server-side or zero-click path in the provided data. No authentication is required (PR:N) and it works remotely against default Chrome configurations below 151.0.7922.72. The primary limiting factors are the required user interaction, the renderer sandbox (an OOB read alone yields disclosure/instability, not automatic code execution without a sandbox-escape chain), and Chrome's rapid auto-update, which shrinks the exposure window; SSVC also marks it not automatable.

Impact

Signals conflict and should be weighed carefully. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H = 8.8 High) implies full triad compromise, but Chromium's own security team rated the bug 'Low', and CWE-125 (a read primitive) rarely delivers integrity/availability=High by itself, so the NVD C:H/I:H/A:H may overstate realistic impact. CISA SSVC aligns with lower urgency: Exploitation 'none', Automatable 'no', though Technical Impact is 'total'. EPSS is 0.18% (8th percentile) and there is no KEV listing and no public exploit identified - consistent with a not-yet-exploited, UI-gated bug. Net: this is a routine same-day Chrome patch priority (browsers auto-update), not an emergency; the 8.8 headline is driven by NVD's optimistic impact metrics rather than by evidence of weaponization.

Exploit ScenarioDerived

An attacker hosts or injects a malicious HTML page containing crafted frame markup and lures a victim to visit it (phishing link, malvertising, or compromised site). When Chrome's Frame code processes the page it reads out of bounds, leaking adjacent memory that could expose sensitive process data or seed a larger exploit chain. No public exploit code has been identified, and success requires the user to actually load the page (UI:R).

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Jul 30, 2026

Out-of-bounds memory access in Google Chrome's Frame component affects all Desktop builds prior to 151.0.7922.72, letting a remote attacker read memory outside intended bounds when a victim opens a crafted HTML page. Chromium rated the underlying flaw Low severity, yet NVD scores it 8.8 (High) and tags flag potential RCE; there is no public exploit identified at time of analysis and EPSS is a low 0.18% (8th percentile). A vendor patch is available and the issue is not listed in CISA KEV.

RemediationAI

Vendor-released patch: 151.0.7922.72 - update Google Chrome to 151.0.7922.72 or later via the Stable Desktop channel (chrome://settings/help forces the check-and-relaunch) as documented at https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0887107924.html. In managed fleets, push the update through your enterprise policy/patch-management channel and ensure users fully relaunch Chrome so the new binary loads. Because exploitation requires the victim to open a crafted page, interim compensating controls include enabling Site Isolation (default) and, for high-risk users, restricting untrusted browsing or using web-content filtering to reduce exposure to attacker pages; these reduce likelihood but do not remove the flaw, so patching remains the only complete fix. Users of other Chromium-based browsers should apply the equivalent vendor update once released.

Affected VersionsENISA

Chrome 151.0.7922.72 <151.0.7922.72

Affected Packages

euvd chrome fix: 151.0.7922.72

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 defect lives in Chrome's Frame handling, part of the Blink rendering engine that manages nested browsing contexts (iframes, frame trees) inside the multi-process Chromium architecture. The root cause is CWE-125 (Out-of-bounds Read): logic in the frame code computes an index or length incorrectly and accesses memory past the end of an allocated buffer while parsing or processing attacker-controlled HTML. Per CPE data this affects cpe:2.3:a:google:chrome across versions below 151.0.7922.72. OOB reads in a renderer can leak adjacent heap contents (potentially defeating ASLR or exposing cross-site data) and, if the corrupted read feeds later control flow, may be chained toward the 'Potential RCE' outcome noted in the tags - though on its own an OOB read is primarily an information-disclosure/stability class.

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Severity by source

Sources disagree (Low–Critical)
Vendor (Chrome) PRIMARY 8.8 HIGH
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vuln.today AI 7.1 HIGH

Remote crafted page needs user interaction (UI:R, PR:N); CWE-125 OOB read primarily leaks memory (C:H) with possible crash (A:L) and no clear integrity impact, matching Chromium's Low rating.

3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:L
4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N
SUSE CRITICAL
Red Hat 6.3 LOW

vuln.today treats the vendor’s rating as authoritative. A higher third-party CVSS (e.g. CISA-ADP) is shown for transparency but does not drive the headline severity.

CVSS VectorVendor: Chrome

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

Lifecycle Timeline

3
Patch available
Jul 30, 2026 - 02:02 EUVD
CVE Published
Jul 30, 2026 - 00:25 cve.org
UNKNOWN (no severity yet)
CVE Published
Jul 30, 2026 - 00:25 cve.org
HIGH 8.8

DescriptionCVE.org

Inappropriate implementation in Frame in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to potentially perform out of bounds memory access via a crafted HTML page. (Chromium security severity: Low)

Executive ViewAI

Why It Matters

Google Chrome desktop versions before 151.0.7922.72 contain an out-of-bounds memory access vulnerability in the Frame component with potential remote code execution capability; remote attackers can read sensitive memory when users open malicious HTML pages. Although a patch is available, this affects all desktop Chrome users organization-wide and poses risk of credential leakage, data exposure, and system compromise.

Business Impact: High
Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score
0.2%
Top 92% exploitable
Prevalence
Ubiquitous
one of the most widely deployed desktop browsers worldwide
Data Quality
6 sources
Confidence: High

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 0.2%
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
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
High
Technical Impact
Total

Priority Score

44
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +44
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Vendor StatusVendor

SUSE

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

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