Quick answers
- Is CVE-2026-105978 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-105978 being exploited in the wild.
- How severe is CVE-2026-105978?
- High severity, with a CVSS score of 7.2, published 3 November 2026.
- Which products and versions are affected?
- Welotec TK100 below 3.5.116; Welotec TK500-v2 below 1.0.124; Welotec TK500-v3 below 1.0.123.
- Is there a fix for CVE-2026-105978?
- 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-2026-105978 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-105978?
- 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
OS command injection vulnerability (CWE-78) in the management control functions of Welotec TK routers due to improper input validation. An attacker with high privileges who has network access to the management interface can inject arbitrary OS commands that execute with root privileges. The vulnerability is in web-based management functions and requires authenticated access but no user interaction.
Affected products
- Welotec TK100 below 3.5.116
- Welotec TK500-v2 below 1.0.124
- Welotec TK500-v3 below 1.0.123
Timeline
- 2026-11-03: disclosed