Google Chromium V8 Out-of-Bounds Write Vulnerability
Google Chromium V8 Engine contains out-of-bounds write vulnerability that allows a remote attacker to execute code inside a sandbox via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.
- Vendor
- Product
- Chromium V8
- CVSS
- 8.8
- EPSS (exploit probability)
- 35.6%
- Status
- kev
- CISA patch-by (BOD 22-01)
- Added to KEV
Is CVE-2018-17480 being exploited?
Yes. CISA added CVE-2018-17480 to its Known Exploited Vulnerabilities catalog on . CISA only lists a CVE when it has reliable evidence of exploitation in the wild.
FIRST's EPSS model puts the probability of exploitation activity in the next 30 days at 35.6% (scored October 14, 2026).
- CISA KEV[ LISTED ]
- ENISA EUVD (exploited)[ — ]
- CIRCL KEV[ — ]
Catalog snapshot 2026-10-19. Full cross-catalog view: /kev-comparison
What to do
CISA required actionApply updates per vendor instructions.
US federal civilian agencies must remediate by (14 days after listing) under BOD 22-01. Everyone else: that deadline is a sensible upper bound, not a target. Vendor guidance and the NVD record are linked under Source above.
Other Google Chromium V8 CVEs we track
| CVE / Vulnerability | Severity | CVSS | EPSS | Added to KEV |
|---|---|---|---|---|
| CVE-2026-87491 Google Chromium V8 Out of Bounds Write Vulnerability | [ HIGH ] | 8.8 | 3.1% | |
| CVE-2026-11645 Google Chromium V8 Out-of-Bounds Read and Write Vulnerability | [ HIGH ] | 8.8 | 2.4% | |
| CVE-2026-3910 Google Chromium V8 Improper Restriction of Operations Within the Bounds of a Memory Buffer Vulnerability | [ HIGH ] | 8.8 | 1.1% | |
| CVE-2025-13223 Google Chromium V8 Type Confusion Vulnerability | [ HIGH ] | 8.8 | 4.9% | |
| CVE-2025-10585 Google Chromium V8 Type Confusion Vulnerability | [ CRITICAL ] | 9.8 | 5.4% | |
| CVE-2025-6554 Google Chromium V8 Type Confusion Vulnerability | [ HIGH ] | 8.1 | 14.1% | |
| CVE-2025-5419 Google Chromium V8 Out-of-Bounds Read and Write Vulnerability | [ HIGH ] | 8.8 | 7.8% | |
| CVE-2024-7965 Google Chromium V8 Inappropriate Implementation Vulnerability | [ HIGH ] | 8.8 | 18.5% |