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Google Chrome EUVDEUVD-2026-34717

| CVE-2026-11256 HIGH
Out-of-bounds Read (CWE-125)
2026-06-05 chrome-cve-admin@google.com GHSA-ccp5-cv37-gvv9
High
Disputed · 8.3 Vendor: google
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Attack ChainAIDerived

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

  1. Access
    Lure victim to malicious site
  2. Delivery
    Deliver crafted HTML to browser
  3. Exploit
    Exploit separate renderer bug for RCE
  4. Execution
    Trigger GPU integer overflow from renderer
  5. Persist
    Escape sandbox into GPU process
  6. Impact
    Execute code at GPU process privilege

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, read limits
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 three concrete prerequisites drawn from the CVE description and CVSS vector: (1) the attacker must have already achieved code execution inside the Chrome renderer process via a separate vulnerability - the GPU bug alone is not directly reachable from a web page; (2) the victim must visit and interact with a crafted HTML page (UI:R), meaning purely passive or drive-by triggering without navigation is not described; and (3) the target must be running Chrome below 149.0.7827.53 with the GPU process active (default configuration, hardware acceleration enabled). The high attack complexity (AC:H) further indicates the integer overflow requires specific timing or memory layout conditions to weaponize reliably, limiting opportunistic mass exploitation.

Impact

The CVSS 3.1 score of 8.3 (AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H) reflects high impact across confidentiality, integrity, and availability with scope change due to the sandbox escape, but is tempered by high attack complexity (AC:H) and required user interaction (UI:R). The description explicitly states an attacker must have already 'compromised the renderer process,' which is a substantial prerequisite not fully captured by PR:N - in practice this is a second-stage bug requiring a separate renderer RCE. Chromium itself rates the underlying severity as Low, no EPSS data was provided, the CVE is not on CISA KEV, and no POC has been published, so realistic risk is moderate and primarily relevant as a component of a full exploit chain rather than a standalone threat. EPSS, KEV, and POC signals are all absent from the input, so prioritization should rely on the chained-exploit profile and Chrome's standard auto-update cadence.

Exploit ScenarioDerived

An attacker lures a victim to a malicious or compromised website that first delivers a separate renderer-process exploit (e.g., a V8 or Blink bug), then chains it with a crafted HTML/WebGL payload that triggers the GPU integer overflow to escape the sandbox and execute code in the GPU process context. From there the attacker can pivot to broader host compromise; no public exploit has been identified at time of analysis, but Chrome sandbox escapes are routinely paired with renderer bugs in commercial exploit chains.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Jun 05, 2026

Sandbox escape in Google Chrome's GPU process prior to version 149.0.7827.53 allows a remote attacker who has already compromised the renderer process to break out of the sandbox via a crafted HTML page that triggers an integer overflow. The flaw, tagged as a buffer overflow with information disclosure potential, requires user interaction and a chained renderer compromise, and no public exploit has been identified at time of analysis despite Chromium rating the underlying severity as Low.

RemediationAI

Vendor-released patch: Google Chrome 149.0.7827.53 - upgrade Stable channel Chrome to this version or later as documented in the Chrome Releases advisory at https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html and tracked in Chromium issue https://issues.chromium.org/issues/498856565. Most installations will receive this automatically via Chrome's background updater; enterprise fleets using GPO or MDM should verify the managed update channel is not pinned to an older version and force a relaunch. As an interim compensating control while patching, disabling hardware acceleration (chrome://settings → System → 'Use graphics acceleration when available' off) routes rendering through the software path and reduces exposure of the vulnerable GPU code, at the cost of degraded WebGL/video performance and higher CPU usage; users of Chromium-derived browsers (Edge, Brave, Opera) should await and apply their respective merged updates.

Affected VersionsENISA

Chrome 149.0.7827.53 <149.0.7827.53

Affected Packages

euvd chrome fix: 149.0.7827.53

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 vulnerability resides in Chrome's GPU process, the privileged component that handles graphics commands forwarded from sandboxed renderers via the Chrome IPC layer. The root cause is classified under CWE-125 (out-of-bounds read), stemming from an integer overflow during size or index calculations in GPU command processing; when the overflow wraps an arithmetic value, subsequent memory operations read or write outside intended buffer boundaries. Because the GPU process runs at a higher privilege level than the renderer sandbox, memory corruption there enables a cross-process sandbox escape, which is reflected in the CVSS Scope:Changed (S:C) attribute.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Sources disagree (Low–High)
Vendor (google) PRIMARY 8.3 HIGH
AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
SUSE HIGH
Red Hat 6.5 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: google

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

Lifecycle Timeline

3
CVSS changed
Jun 05, 2026 - 12:22 NVD
8.3 (HIGH)
CVE Published
Jun 05, 2026 - 00:17 nvd
UNKNOWN (no severity yet)
CVE Published
Jun 05, 2026 - 00:17 nvd
HIGH 8.3

DescriptionCVE.org

Integer overflow in GPU in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Low)

Executive ViewAI

Why It Matters

Google Chrome versions prior to 149.0.7827.53 contain a sandbox escape vulnerability that could allow attackers to break out of the browser security boundary if the renderer process is already compromised. Although no public exploit has been identified at time of analysis, successful exploitation could enable full system compromise; patch all Chrome deployments immediately given the critical nature of sandbox escapes.

Business Impact: High
Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score
0.1%
Top 79% exploitable
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 0.1%
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
Partial

Priority Score

42
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +42
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.

Related Vulnerabilities in Google Chrome Security Fixes (149.0.7827.53)

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4.3
CVE-2026-11255 HIGH
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CVE-2026-11258 MEDIUM
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CVE-2026-11259 MEDIUM
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CVE-2026-11260 MEDIUM
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CVE-2026-11261 MEDIUM
4.3
CVE-2026-11262 HIGH
8.8
CVE-2026-11263 MEDIUM
6.5
CVE-2026-11264 MEDIUM
4.3
CVE-2026-11265 HIGH
7.5
CVE-2026-11266 MEDIUM
4.3
CVE-2026-11267 MEDIUM
4.3
CVE-2026-11268 MEDIUM
6.5
CVE-2026-11269 HIGH
7.1
CVE-2026-11270 MEDIUM
6.5
CVE-2026-11271 MEDIUM
6.5
CVE-2026-11272 HIGH
8.8
CVE-2026-11273 MEDIUM
6.1
CVE-2026-11275 MEDIUM
6.5
CVE-2026-11276 MEDIUM
5.1
CVE-2026-11277 MEDIUM
4.3
CVE-2026-11278 MEDIUM
6.5
CVE-2026-11280 MEDIUM
4.3
CVE-2026-11281 MEDIUM
5.0
CVE-2026-11282 CRITICAL
9.6
CVE-2026-11283 MEDIUM
6.5
CVE-2026-11284 MEDIUM
6.5
CVE-2026-11285 MEDIUM
4.3
CVE-2026-11286 MEDIUM
4.3
CVE-2026-11287 MEDIUM
6.5
CVE-2026-11288 MEDIUM
6.5
CVE-2026-11289 MEDIUM
6.5
CVE-2026-11290 MEDIUM
5.0
CVE-2026-11291 MEDIUM
4.3
CVE-2026-11292 MEDIUM
4.3
CVE-2026-11293 CRITICAL
9.6
CVE-2026-11294 MEDIUM
4.3
CVE-2026-11295 HIGH
8.8
CVE-2026-11298 MEDIUM
4.3
CVE-2026-11299 MEDIUM
6.5
CVE-2026-11300 MEDIUM
4.3
CVE-2026-11301 HIGH
8.8
CVE-2026-11302 MEDIUM
4.3
CVE-2026-11308 MEDIUM
6.3
CVE-2026-11309 MEDIUM
4.3
CVE-2026-11274 MEDIUM
4.3
CVE-2026-11279 HIGH
8.8
CVE-2026-11296 HIGH
7.5
CVE-2026-11297 HIGH
7.7
CVE-2026-11303 HIGH
8.8
CVE-2026-11304 HIGH
8.8
CVE-2026-11305 HIGH
8.8
CVE-2026-11306 HIGH
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Vendor StatusVendor

SUSE

Severity: Important
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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