Is CVE-2025-12259 in the CISA KEV catalog?

No. CVE-2025-12259 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-12259?

CVE-2025-12259 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2025-12259?

CVE-2025-12259 has an EPSS score of 0.84% (53th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2025-12259

HIGH

8.8

CVSS v3

NVD

Description

A flaw has been found in TOTOLINK A3300R 17.0.0cu.557_B20221024. The affected element is the function setScheduleCfg of the file /cgi-bin/cstecgi.cgi of the component POST Parameter Handler. This manipulation of the argument recHour causes stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been published and may be used.

CWE-119Buffer Overflow CWE-121

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

0.84%probability of exploitation in 30 days

53rdpercentile

Moderate risk: more likely to be exploited than 53% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-28.