CVE-2025-20882
Router OS vulnerability - F5
Critical
CVSS Score: 9.9
Published: 2026-03-19
Description
A buffer overflow vulnerability in F5 Router OS allows attackers to cause denial of service. This affects versions prior to 8.59.4.
Affected Systems
| Vendor | F5 |
| Product | Router OS |
| Affected Versions | < 2.56 |
| CWE ID | CWE-79 |
Mitigation
As a workaround, restrict network access until a patch is available.
Fix Instructions
1. Update Router OS to the latest version
2. Apply vendor patch when available
3. Implement network segmentation
4. Monitor for exploitation attempts
References
Risk Assessment
CVSS: 9.9/10
| Exploit Available | Unknown |
| Patch Available | Yes |
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