Command Injection in WireGuard VPN
Welotec TK102L, TK102W and TK100 below 3.5.116, TK500-v2 models below 1.0.124, and TK500-v3 models below 1.0.123 are affected when the WireGuard VPN function is in use. The fixed versions are listed as the update targets.
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
- Exploited
- No known exploitation
- Fix
- Fixed in 3.5.116, 1.0.124, 1.0.123
- Who is exposed
- Specific setups only
Do first: Check whether your setup matches what the bug needs. Welotec TK102L, TK102W and TK100 routers below version 3.5.116 Welotec TK525L-v2, TK525L-W-v2, TK525W-v2, TK535L1-v2 (TK500-v2) routers below version 1.0.124 Welotec TK525L-v3, TK525L-W-G-v3, TK525L-IO-v3, TK525L-W-v3, TK525W-v3, TK555L-v3 (TK500-v3) routers below version 1.0.123 The WireGuard VPN function is in use
- Exploitation0/40No signal
- Exposure8/25Specific setups only, reachable over the network
- Reach?/20Reach: unknown (data gap). No tracked technology or package matched
- Severity9.6/10CVSS 8.6, total technical impact per CISA
- No patch0/5No signal
What would change the score
- Would score about 68 if added to CISA KEV
- Would score about 63 if CISA's SSVC rates exploitation active
- Would score about 25 if CISA's SSVC rates it automatable
CVE-2026-105980 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 8.6 (high) and affects TK100, TK500-v2 and TK500-v3; fixed in 3.5.116, 1.0.124 and 1.0.123.
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- Published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- FIRST's estimate of the chance attackers exploit it in the next 30 days, updated daily.What do these mean? →
- 0.36% · 29th percentile
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 18/100 · provisional
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Specific setups only
- Fix
- Fixed in 3.5.116, 1.0.124, 1.0.123
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
The WireGuard VPN function is affected by this vulnerability, which stems from improper input validation. A remote attacker with high privileges could exploit it to run arbitrary system commands with root-level access.
Read the original description
Improper input validation in the WireGuard VPN function may allow a remote attacker with high privileges to inject system commands and execute them with root privileges.
What to do
Check whether your setup matches what the bug needs.
Welotec TK102L, TK102W and TK100 routers below version 3.5.116 Welotec TK525L-v2, TK525L-W-v2, TK525W-v2, TK535L1-v2 (TK500-v2) routers below version 1.0.124 Welotec TK525L-v3, TK525L-W-G-v3, TK525L-IO-v3, TK525L-W-v3, TK525W-v3, TK555L-v3 (TK500-v3) routers below version 1.0.123 The WireGuard VPN function is in useUpgrade to a fixed version: 3.5.116, 1.0.124, 1.0.123.
Timeline
- CVE published
- First seen by cve.now
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Welotec TK100
From 0.0.0 · fixed in 3.5.116
- Welotec TK500-v2
From 0.0.0 · fixed in 1.0.124
- Welotec TK500-v3
From 0.0.0 · fixed in 1.0.123
Evidence 1
- Link
Corrections
None so far.
Something wrong on this page? Report an error. Every fix is listed here.
Questions about CVE-2026-105980
Is CVE-2026-105980 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data
What does this mean?
Improper input validation in the WireGuard VPN function allows an attacker to inject system commands. Those commands run with root privileges, which gives the attacker full control of the device.Source: certvde.com
Which versions are affected by CVE-2026-105980?
TK100: from 0.0.0 before 3.5.116. TK500-v2: from 0.0.0 before 1.0.124. TK500-v3: from 0.0.0 before 1.0.123.Source: cve.now feed data
Am I affected, and how do I check?
Welotec TK102L, TK102W and TK100 routers below 3.5.116, TK525L-v2, TK525L-W-v2, TK525W-v2 and TK535L1-v2 (TK500-v2) routers below 1.0.124, and TK525L-v3, TK525L-W-G-v3, TK525L-IO-v3, TK525L-W-v3, TK525W-v3 and TK555L-v3 (TK500-v3) routers below 1.0.123 are listed. The WireGuard VPN function must be in use. Check the firmware version in the device's web interface and whether WireGuard VPN is enabled.Source: certvde.com
How do I fix CVE-2026-105980?
Update TK102L, TK102W and TK100 to 3.5.116 or later, TK500-v2 models to 1.0.124 or later, and TK500-v3 models to 1.0.123 or later.Source: certvde.com