PT-2025-23835 · Totolink · Totolink Ex1200T

Asonepen · Published 2025-06-04 · Updated 2025-06-05 · CVE-2025-5600

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions TOTOLINK EX1200T version 4.1.2cu.5232 B20210713

Description A critical vulnerability has been found in the setLanguageCfg function of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument LangType leads to a stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

Recommendations As a temporary workaround, consider disabling the setLanguageCfg function until a patch is available. Restrict access to the /cgi-bin/cstecgi.cgi file to minimize the risk of exploitation. Avoid using the LangType argument in the affected API endpoint until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

Stack Overflow

Buffer Overflow

Weakness Enumeration

CWE-787

CWE-121

CWE-119

Related Identifiers

BDU:2025-10016

CVE-2025-5600

Affected Products

Totolink Ex1200T

References · 14

• 🔥 https://kn0sinna.notion.site/TOTOLINK-EX1200T-stack-based-BufferOverflow-vulnerability-204b1876cd6e80709ce8dab4778dce55 · Exploit
• https://bdu.fstec.ru/vul/2025-10016 · Security Note
• https://osv.dev/vulnerability/CVE-2025-5600 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-5600 · Security Note
• https://twitter.com/offseq/status/1930414307528904714 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1930338963589361832 · Twitter Post
• https://totolink.net · Note
• https://twitter.com/CVEnew/status/1930321525929861454 · Twitter Post
• https://vuldb.com/?submit.588075 · Note
• https://vuldb.com/?ctiid.311087 · Note
• https://t.me/cvetracker/25429 · Telegram Post
• https://twitter.com/CveFindCom/status/1930318689351422087 · Twitter Post
• https://t.me/cvenotify/124635 · Telegram Post
• https://vuldb.com/?id.311087 · Note