CVE-2026-78952
HIGH 8.3 ALL-YEARSOut of bounds write in Crashpad in Google Chrome on on Windows prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)
Severe if exploited (CVSS 8.3), but no confirmed exploitation. Patch on a normal cadence.
Exploitation likelihood
0.4%chance of exploitation in 30 days · 34th percentile
Impact if exploited
8.3CVSS 3.1 · HIGH · ADP
- ConfidentialityHigh
- IntegrityHigh
- AvailabilityHigh
What an attacker needs
- ✓Access: Reachable over the network — no local access needed
- ✓Privileges: No account or privileges required
- ⚠User interaction: A user must take an action (click / open a file)
- ⚠Complexity: Needs a race window or specific setup
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept
No public PoC is currently catalogued.
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Tracked sources are checked weekly for the full archive, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.
Weakness (CWE)
- CWE-787: Out of bounds write
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
References and research data (JSON)
Vendor product assessments
All currently supported Red Hat products · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
Red Hat · CVE-2026-78952 · Updated 2026-08-26T16:35:44+00:00
Known Affected Software Configurations
| Vendor | Product | Version range |
|---|---|---|
| Chrome | < 152.0.7977.65 |
All CVSS metrics
- HIGH 8.3 v3.1 · ADP Primary
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H - HIGH 8.3 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
References
Advisories
- https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html CVE record · Chrome · Updated 2026-08-25T20:10:10.291Z
NVD · CVE-2026-78952 · Updated 2026-08-27T17:40:23.567 - https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-78952.json Red Hat · CVE-2026-78952 · Updated 2026-08-26T16:35:44+00:00
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-65820 EUVD · EUVD-2026-65820
Technical & other
- https://issues.chromium.org/issues/545820931 CVE record · Chrome · Updated 2026-08-25T20:10:10.291Z
NVD · CVE-2026-78952 · Updated 2026-08-27T17:40:23.567 - https://access.redhat.com/security/cve/CVE-2026-78952 Red Hat · CVE-2026-78952 · Updated 2026-08-26T16:35:44+00:00
- https://www.cve.org/CVERecord?id=CVE-2026-78952 Red Hat · CVE-2026-78952 · Updated 2026-08-26T16:35:44+00:00
Sources: NVD · CVE.org · All sources and attribution · EPSS