CVE-2026-5858: Heap buffer overflow in Google Chrome
Heap buffer overflow in WebML in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: Critical)
AI Analysis
Technical Summary
This vulnerability involves a heap buffer overflow in the WebML feature of Google Chrome before version 147.0.7727.55. Exploitation requires a remote attacker to craft a malicious HTML page that triggers the overflow, potentially leading to arbitrary code execution within the context of the browser. The issue is recognized as critical by Chromium security. The vendor advisory is available but does not explicitly state the patch or remediation status in the provided data.
Potential Impact
Successful exploitation could allow remote attackers to execute arbitrary code on the affected system via a specially crafted HTML page. This could lead to full compromise of the user's browser environment. No known exploits have been reported in the wild so far.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory at https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop.html for current remediation guidance. Users should update to version 147.0.7727.55 or later if a fix is provided there. Until confirmed, avoid visiting untrusted or suspicious websites that could host malicious HTML content targeting this vulnerability.
CVE-2026-5858: Heap buffer overflow in Google Chrome
Description
Heap buffer overflow in WebML in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: Critical)
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a heap buffer overflow in the WebML feature of Google Chrome before version 147.0.7727.55. Exploitation requires a remote attacker to craft a malicious HTML page that triggers the overflow, potentially leading to arbitrary code execution within the context of the browser. The issue is recognized as critical by Chromium security. The vendor advisory is available but does not explicitly state the patch or remediation status in the provided data.
Potential Impact
Successful exploitation could allow remote attackers to execute arbitrary code on the affected system via a specially crafted HTML page. This could lead to full compromise of the user's browser environment. No known exploits have been reported in the wild so far.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory at https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop.html for current remediation guidance. Users should update to version 147.0.7727.55 or later if a fix is provided there. Until confirmed, avoid visiting untrusted or suspicious websites that could host malicious HTML content targeting this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-04-08T19:34:31.447Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop.html","vendor":"Google"}]
Threat ID: 69d6ca371cc7ad14dab3cb53
Added to database: 4/8/2026, 9:35:51 PM
Last enriched: 4/8/2026, 10:22:36 PM
Last updated: 4/9/2026, 8:15:16 AM
Views: 11
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.