CVE-2021-30607: fedoraproject fedora Use After Free
Vulnerability summary
CVE-2021-30607 is a high (CVSS 8.8) Use After Free vulnerability in fedoraproject fedora. EPSS estimates a 4.13% chance of exploitation in the next 30 days, higher than 90.8% 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 6 · Related 6Timeline
- 03-09-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
Chromium: CVE-2021-30607 Use after free in Permissions
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
4.13%
Chance of exploitation in the next 30 days
Percentile
91%
Versus all other CVEs
30-day change
No change 0.00 pp
From 4.13% 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.
Microsoft3 products
- edge≤ 93.0.961.38
- edge_chromium≤ 93.0.4577.63
- microsoft edge (chromium-based)unspecified
Alpine1 product
- chromium< 93.0.4577.63-r0
Debian1 product
- chromium< 93.0.4577.82-1
Fedoraproject1 product
- fedoraEOL35
Ubuntu1 product
- chromium-browser< 93.0.4577.63-0ubuntu0.18.04.1
5 vendors · 7 products
References
6 links
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30607X Refsource MISCPatchVendor Advisory