TOTOLINK A3000RU Syslog Configuration File ExportSyslog.sh access control

published 2025-03-24 19 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-7346

cvss: 4.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 46%
public exploits: 0; none known

A vulnerability classified as problematic was found in TOTOLINK A3000RU up to 5.9c.5185. Affected by this vulnerability is an unknown functionality of the file /cgi-bin/ExportSyslog.sh of the component Syslog Configuration File Handler. The manipulation leads to improper access controls. The attack needs to be done within the local network. The exploit has been disclosed to the public and may be used.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 19 mo ago (2025-03-24)

Exploit prediction

0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

lavender-bicycle-a5a.notion.site https://lavender-bicycle-a5a.notion.site/TOTOLINK-A3000RU-ExportSyslog-1b953a41781f8064970dc7809a52ac6c?pvs=4 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	5.3	CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
CNA	3.1	4.3	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CNA	3.0	4.3	CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CNA	2.0	3.3	AV:A/AC:L/Au:N/C:P/I:N/A:N
CNA	4.0	5.3	CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

TOTOLINK A3000RU

Classification

Weakness

CWE-284 Improper Access Control
CWE-266 Incorrect Privilege Assignment

References

lavender-bicycle-a5a.notion.site /TOTOLINK-A3000RU-ExportSyslog-1b953a41781f8064970dc7809a52ac6c?pvs=4
exploit, third-party-advisory
vuldb.com /?id.300709
vdb-entry, third-party-advisory
vuldb.com /?ctiid.300709
signature, permissions-required, vdb-entry
vuldb.com /?submit.521570
third-party-advisory, vdb-entry
totolink.net /
product

Sources

CVE List CVE-2025-2688
NVD CVE-2025-2688

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary