Quick answers
- Is CVE-2026-105981 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-105981 being exploited in the wild.
- How severe is CVE-2026-105981?
- High severity, with a CVSS score of 7.2, published 3 November 2026.
- Which products and versions are affected?
- Welotec TK100 before 3.5.116; Welotec TK500-v2 before 1.0.124; Welotec TK500-v3 before 1.0.123.
- Is there a fix for CVE-2026-105981?
- Yes: fixed in TK100 3.5.116, TK500-v2 1.0.124, TK500-v3 1.0.123. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-105981 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-105981?
- Check whether you run Welotec TK100, Welotec TK500-v2 or Welotec TK500-v3 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: TK100 3.5.116, TK500-v2 1.0.124, TK500-v3 1.0.123
Technical details
The Digital I/O function in affected Welotec routers contains improper input validation that permits OS command injection (CWE-78). An authenticated remote attacker with high privileges can inject operating system commands that execute with root privileges. The vulnerability requires network access and high-privilege credentials but no user interaction.
Affected products
- Welotec TK100 before 3.5.116
- Welotec TK500-v2 before 1.0.124
- Welotec TK500-v3 before 1.0.123
Timeline
- 2026-11-03: advisory: VDE-2026-119 published
- 2026-11-03: disclosed: CVE-2026-105981 published