PT-2025-43920 · Totolink · Totolink A3300R

Yhryhryhr · Published 2025-10-12 · Updated 2025-10-28 · CVE-2025-12259

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions TOTOLINK A3300R version 17.0.0cu.557 B20221024

Description A flaw exists in TOTOLINK A3300R. The issue is a stack-based buffer overflow caused by the manipulation of the recHour argument within the setScheduleCfg function located in the /cgi-bin/cstecgi.cgi file, specifically within the POST Parameter Handler component. This allows for remote exploitation. The exploit has been published.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

RCE

Stack Overflow

Buffer Overflow

Weakness Enumeration

CWE-121

CWE-119

Related Identifiers

BDU:2025-13503

CVE-2025-12259

Affected Products

Totolink A3300R

References · 12

• 🔥 https://github.com/noahze01/IoT-vulnerable/blob/main/TOTOLink/A3300R/setScheduleCfg.md · Exploit
• https://bdu.fstec.ru/vul/2025-13503 · Security Note
• https://osv.dev/vulnerability/CVE-2025-12259 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-12259 · Security Note
• https://twitter.com/CveTodo/status/1983067983434916245 · Twitter Post
• https://vuldb.com/?submit.673726 · Note
• https://t.me/cveNotify/140429 · Telegram Post
• https://vuldb.com/?ctiid.329930 · Note
• https://twitter.com/VulmonFeeds/status/1982816274523525498 · Twitter Post
• https://vuldb.com/?id.329930 · Note
• https://totolink.net · Note
• https://twitter.com/CVEnew/status/1982760691774738903 · Twitter Post