CVE-2025-66287
High
Description
A flaw was found in WebKitGTK. Processing malicious web content can cause an unexpected process crash due to improper memory handling.
SeverityHigh
CVSS8.8
Exploit probability—
Product
WebKitGTK
PublishedDec 4, 2025
First seenDec 4, 2025
Weakness typeCWE-120CWE-120
How to fix
Update
- The WebKitGTK Team WebKitGTK2.50.3 or later
Vendor advisories
- access.redhat.com/errata/RHSA-2025:22789
- access.redhat.com/errata/RHSA-2025:22790
- access.redhat.com/errata/RHSA-2025:23110
- access.redhat.com/errata/RHSA-2025:23433
- access.redhat.com/errata/RHSA-2025:23434
- access.redhat.com/errata/RHSA-2025:23451
- access.redhat.com/errata/RHSA-2025:23452
- access.redhat.com/errata/RHSA-2025:23583
- access.redhat.com/errata/RHSA-2025:23591
- access.redhat.com/errata/RHSA-2025:23742
- access.redhat.com/errata/RHSA-2025:23743
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| The WebKitGTK Team WebKitGTK | v < 2.50.3 | 2.50.3 |
| Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support | No range specified | — |
| enterprise_linux 8 | No range specified | — |
| rhel_aus 8.2 | No range specified | — |
| rhel_aus 8.4 | No range specified | — |
| rhel_aus 8.6 | No range specified | — |
| rhel_e4s 8.8 | No range specified | — |
| enterprise_linux 9 | No range specified | — |
| rhel_e4s 9.0 | No range specified | — |
| rhel_e4s 9.2 | No range specified | — |
| rhel_eus 9.4 | No range specified | — |
| rhel_eus 9.6 | No range specified | — |
| Red Hat Red Hat Enterprise Linux 7 | No range specified | — |
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