CVE-2021-30525: fedoraproject fedora Use After Free
Vulnerability summary
CVE-2021-30525 is a high (CVSS 8.8) Use After Free vulnerability in fedoraproject fedora. EPSS estimates a 0.90% chance of exploitation in the next 30 days, higher than 59.5% of scored vulnerabilities.
Not severe (CVSS 8.8, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 4 · Related 4Timeline
- 07-06-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
Use after free in TabGroups in Google Chrome prior to 91.0.4472.77 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · AlpineEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.90%
Chance of exploitation in the next 30 days
Percentile
60%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.90% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Alpine1 product
- chromium< 91.0.4472.77-r0
Debian1 product
- chromium< 93.0.4577.82-1
Fedoraproject1 product
- fedoraEOL33 | 34
Google1 product
- chrome≥ unspecified, < 91.0.4472.77 | < 91.0.4472.77
Ubuntu1 product
- chromium-browser< 91.0.4472.77-0ubuntu0.18.04.1
5 vendors · 5 products
References
9 links- chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.htmlX Refsource MISCRelease NotesVendor Advisory
