LB-LINK AC1900 Router set_manpwd websGetVar os command injection

published 2025-02-24 20 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-4391

cvss: 6.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 10.2%; EPSS 10.2% chance of exploitation in 30 days, percentile 95%
public exploits: 0; none known

A vulnerability, which was classified as critical, was found in LB-LINK AC1900 Router 1.0.2. Affected is the function websGetVar of the file /goform/set_manpwd. The manipulation of the argument routepwd leads to os command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: yes
Technical impact: partial
Assessed: 20 mo ago (2025-02-24)

Exploit prediction

10.17% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

noisy-caravel-a9a.notion.site https://noisy-caravel-a9a.notion.site/LBLINK_AC1900_V1-0-2_-set_manpwd-_-bl_do_system-_CI-179898c94eac81b9bf56c1f64db77e2d?pvs=74 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	5.3	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
CNA	3.1	6.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CNA	3.0	6.3	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CNA	2.0	6.5	AV:N/AC:L/Au:S/C:P/I:P/A:P
CNA	4.0	5.3	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/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
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

LB-LINK AC1900 Router

Classification

Weakness

CWE-78 Improper Neutralization of Special Elements used in an OS Command
CWE-77 Improper Neutralization of Special Elements used in a Command

References

noisy-caravel-a9a.notion.site /LBLINK_AC1900_V1-0-2_-set_manpwd-_-bl_do_system-_CI-179898c94eac81b9bf56c1f64db77e2d?pvs=74
exploit, third-party-advisory
vuldb.com /?id.296598
vdb-entry, technical-description, third-party-advisory
vuldb.com /?ctiid.296598
signature, permissions-required, vdb-entry
vuldb.com /?submit.501022
third-party-advisory, vdb-entry

Sources

CVE List CVE-2025-1608
NVD CVE-2025-1608

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