CVE-2021-21154
CRITICALCVSS 9.6/10EPSS 1.42%
Last modified
CVE-2021-21154 is a critical-severity vulnerability rated 9.6/10 on the CVSS scale. Heap buffer overflow in Tab Strip in Google Chrome prior to 88.0.4324.182 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.. EPSS estimates a 1.42% chance of exploitation in the next 30 days.
Description
Heap buffer overflow in Tab Strip in Google Chrome prior to 88.0.4324.182 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Chrome | < 88.0.4324.182 | |
| Fedoraproject | Fedora | 32 |
| Fedoraproject | Fedora | 33 |
References
- https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_16.htmlRelease Notes, Vendor Advisory
- https://crbug.com/1173269Exploit, Issue Tracking, Patch, Permissions Required, Vendor Advisory
- https://security.gentoo.org/glsa/202104-08Third Party Advisory
- https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_16.htmlRelease Notes, Vendor Advisory
- https://crbug.com/1173269Exploit, Issue Tracking, Patch, Permissions Required, Vendor Advisory
- https://security.gentoo.org/glsa/202104-08Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-21154?
Heap buffer overflow in Tab Strip in Google Chrome prior to 88.0.4324.182 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.
How severe is CVE-2021-21154?
CVE-2021-21154 has a CVSS score of 9.6/10 (CRITICAL severity). The EPSS model estimates a 1.42% probability of exploitation in the next 30 days.
How do I fix CVE-2021-21154?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-21149Stack buffer overflow in Data Transfer in Google Chrome on L…8.8
- CVE-2021-2115Vulnerability in the Oracle Common Applications Calendar pro…7.6
- CVE-2021-21150Use after free in Downloads in Google Chrome on Windows prio…9.6
- CVE-2021-21151Use after free in Payments in Google Chrome prior to 88.0.43…9.6
- CVE-2021-21152Heap buffer overflow in Media in Google Chrome on Linux prio…8.8
- CVE-2021-21153Stack buffer overflow in GPU Process in Google Chrome on Lin…8.8
- CVE-2021-21155Heap buffer overflow in Tab Strip in Google Chrome on Window…9.6
- CVE-2021-21156Heap buffer overflow in V8 in Google Chrome prior to 88.0.43…8.8
- CVE-2021-21157Use after free in Web Sockets in Google Chrome on Linux prio…8.8
- CVE-2021-21158Rejected reason: Further investigation determines issue is n…
- CVE-2021-21159Heap buffer overflow in TabStrip in Google Chrome prior to 8…8.8
- CVE-2021-2116Vulnerability in the Oracle Application Express Opportunity …5.4
Are you affected by CVE-2021-21154?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST