Threats / Google / CVE-2022-4135
CVE-2022-4135
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-08-04
Google Chromium GPU vulnerability
Chromium GPU heap buffer overflow allows sandbox escape when renderer process is compromised, affecting Chrome, Edge, and Opera browsers.
Verdict
Today item — known-exploited.
A remote attacker who has compromised the renderer process can exploit a heap buffer overflow in Chromium GPU via crafted HTML to escape the sandbox and gain system-level code execution.
CISA KEV Yes · 2022-11-284EPSS 0.31864 (verify live)5CVSS 9.6 (CISA)3CISA SSVC Exploitation: active · Automatable: no · Impact: total3
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
5 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-11-28).
Probability (EPSS)
EPSS 0.31864 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
CVSS 9.6 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H) · Affected: Google, Chromium GPU. Confirm exact fixed builds in the vendor advisory.CVSS — CISA-assigned via the ADP container (CVE.org), version 3.1; the CNA left no metrics, so CISA's own score is used ahead of NVD.
Weakness (CWE)
Mapped to CWE-787 Out-of-bounds Write — weakness family: Memory safety.CWE assignment from the public NVD record (may be stale); the weakness class drives how the flaw is exploited.
CISA SSVC (triage disposition)
Exploitation: active · Automatable: no · Technical Impact: totalCISA's own stakeholder-specific triage inputs, published in the CVE record (CISA Coordinator role). NOTE: this is CISA's three decision points; the final Act/Attend/Track decision also requires a Mission & Well-being input not published here, so no overall decision is asserted.
Currency of the record
CISA added this to its KEV catalog 3 days after the CVE record was published.KEV lag = CISA-KEV dateAdded − CVE.org datePublished; a floor on how long the known-exploited flaw sat in the public record before the federal catalog listed it. Severity/weakness here is CNA- or CISA-assigned (current at disclosure), independent of NVD's analysis backlog.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
Deliver malicious HTML to trigger initial renderer compromise through web content vulnerability.
Business
User visits attacker-controlled or compromised website, exposing browser to exploitation chain.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
Trigger heap buffer overflow in GPU process through crafted rendering commands after renderer compromise.
Business
Sandbox isolation fails, allowing attacker to break containment and access host system resources.
3
Lateral reach — past segmentation narrative 3
Attacker
Execute arbitrary code with system privileges outside browser sandbox.
Business
Complete compromise of user device, enabling data theft, malware installation, or lateral movement to enterprise networks.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05