PatchTheCVECVE-2025-25662: Tenda O4 V3.0 V1.0.0.10(2936) is vulnerable to Buffer Overflow in the function SafeSetMacFilter of the file /g
CVE-2025-25662 is a critical-severity flaw (CVSS 9.8) affecting o4 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Tenda O4 V3.0 V1.0.0.10(2936) is vulnerable to Buffer Overflow in the function SafeSetMacFilter of the file /goform/setMacFilterList via the argument remark/type/time.
Why this priority
- Critical severity
- Remotely exploitable, no login, no user action
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.4% (top 61%) |
| CISA exploited list | No |
| Weakness | CWE-120 |
| Published | 2025-02-20 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2025-25662?
o4 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2025-25662 being exploited?
CVE-2025-25662 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2025-25662 affect?
CVE-2025-25662 affects o4 firmware. Severity is critical (CVSS 9.8). Tenda O4 V3.0 V1.0.0.10(2936) is vulnerable to Buffer Overflow in the function SafeSetMacFilter of the file /goform/setMacFilterList via the argument remark/type/time.
How urgent is CVE-2025-25662?
Priority 49/100. Critical severity; Remotely exploitable, no login, no user action