Quick answers
- Is CVE-2026-82597 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-82597 being exploited in the wild.
- How severe is CVE-2026-82597?
- High severity, with a CVSS score of 7.4, published 31 August 2026.
- Which products and versions are affected?
- TOTOLINK Nr1800x 9.1.0u.6681_B20230703.
- Is there a fix for CVE-2026-82597?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-82597 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-82597?
- Check whether you run TOTOLINK Nr1800x 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.
Technical details
A command injection vulnerability exists in the setUssd function of /cgi-bin/cstecgi.cgi in TOTOLINK NR1800X firmware version 9.1.0u.6681_B20230703. The vulnerability arises from insufficient input validation on the ussd parameter, allowing an attacker to inject arbitrary shell commands that are executed with device privileges. The attack is network-accessible and does not require authentication. Successful exploitation grants remote code execution on the affected router, potentially compromising network security and customer data. An exploit is publicly available.
Affected products
- TOTOLINK NR1800X 9.1.0u.6681_B20230703
Timeline
- 2026-08-31: disclosed
- other: exploit publicly available