CVE-2025-12259

TOTOLINK A3300R POST Parameter cstecgi.cgi setScheduleCfg stack-based overflow

HIGH
8.8
CVSS Score
Published: October 27, 2025 at 10:02 AM UTC
Updated: October 8, 2026 at 11:10 AM UTC
2 products affected across 1 vendorA3300R FirmwareA3300R· also runs on 1 platform

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Severity
HIGH8.8
Exploit prediction
EPSS 1%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHVulDB
Vector?

Quick Info

StatusANALYZED
CWE
CWE-119CWE-121

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