CVE-2026-87506: Privilege Escalation in Google Chrome WebUI Prior to 153.0.8010.36
A NVD · · CVE-2026-87506
Admiralty grading (A–F · 1–6)
Source reliability
- A Completely reliable
- B Usually reliable
- C Fairly reliable
- D Not usually reliable
- E Unreliable
- F Cannot be judged
Information credibility
- 1 Confirmed
- 2 Probably true
- 3 Possibly true
- 4 Doubtful
- 5 Improbable
- 6 Cannot be judged
NATO Admiralty (AJP-2.1) grades confidence, independent of the risk score. Cross-source corroboration isn't tracked for non-CVE news, so single-source items are capped at a lower credibility number; a low number does not imply low quality.
Key metrics
- EPSS
- 0%
Key insight
A security vulnerability in Chrome's WebUI allows an attacker who has already compromised the renderer process to bypass the sandbox and execute arbitrary code , but this requires a previously compromised renderer as a prerequisite.
Description
CVE-2026-87506 is a privilege escalation vulnerability in Google Chrome prior to version 153.0.8010.36 located in the WebUI component. The vulnerability allows an attacker who has already compromised the renderer process to execute arbitrary code outside the sandbox via a crafted HTML page. The Chromium security severity is rated as "Medium". The attack requires a prior successful compromise of the renderer process as the initial attack vector entry point.
Risk score
- cvss base
- 0.00
- kev bonus
- 0.00
- epss bonus
- 0.00
- poc bonus
- 0.00
- raw before weight
- 0.00
- industry weight
- 1.21
- freshness factor
- 1.00
- exploitability factor
- 1.00
- days old
- 0.00
- vendor mismatch penalty
- 0.00
Path: operational