CVE-2021-21779

A use-after-free vulnerability exists in the way Webkit’s GraphicsContext handles certain events in WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further memory corruption. A victim must be tricked into visiting a malicious web page to trigger this vulnerability.

CVSS v3.1

8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v3.0

6.8 MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:L

CVSS v2.0

6.8 MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P

EPSS

2.90% chance of exploitation in the next 30 days, 86th percentile

Published

2021-07-08

Updated

2024-08-03

Proof-of-concept exploits (1)

• https://talosintelligence.com/vulnerability_reports/TALOS-2021-1238

References

• CVE Record
• NVD entry

Related

• CVE-2021-21778
• CVE-2021-21781
• CVE-2021-21777
• CVE-2021-21782
• CVE-2021-21776
• CVE-2021-21783