CVE-2021-30520
HIGHCVSS 8.8/10EPSS 0.88%
Last modified
CVE-2021-30520 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Use after free in Tab Strip in Google Chrome prior to 90.0.4430.212 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page.. EPSS estimates a 0.88% chance of exploitation in the next 30 days.
Description
Use after free in Tab Strip in Google Chrome prior to 90.0.4430.212 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Chrome | < 90.0.4430.212 | |
| Fedoraproject | Fedora | 33 |
| Fedoraproject | Fedora | 34 |
References
- https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop.htmlRelease Notes, Vendor Advisory
- https://crbug.com/1193362Exploit, Issue Tracking, Third Party Advisory
- https://security.gentoo.org/glsa/202107-06Third Party Advisory
- https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop.htmlRelease Notes, Vendor Advisory
- https://crbug.com/1193362Exploit, Issue Tracking, Third Party Advisory
- https://security.gentoo.org/glsa/202107-06Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-30520?
Use after free in Tab Strip in Google Chrome prior to 90.0.4430.212 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page.
How severe is CVE-2021-30520?
CVE-2021-30520 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.88% probability of exploitation in the next 30 days.
How do I fix CVE-2021-30520?
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
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- CVE-2021-30518Heap buffer overflow in Reader Mode in Google Chrome prior t…8.8
- CVE-2021-30519Use after free in Payments in Google Chrome prior to 90.0.44…8.8
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- CVE-2021-30521Heap buffer overflow in Autofill in Google Chrome on Android…8.8
- CVE-2021-30522Use after free in WebAudio in Google Chrome prior to 91.0.44…8.8
- CVE-2021-30523Use after free in WebRTC in Google Chrome prior to 91.0.4472…8.8
- CVE-2021-30524Use after free in TabStrip in Google Chrome prior to 91.0.44…8.8
- CVE-2021-30525Use after free in TabGroups in Google Chrome prior to 91.0.4…8.8
- CVE-2021-30526Out of bounds write in TabStrip in Google Chrome prior to 91…8.8
Are you affected by CVE-2021-30520?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST