Quick answers
- Is CVE-2026-114575 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-114575 being exploited in the wild.
- How severe is CVE-2026-114575?
- Critical severity, with a CVSS score of 10, published 22 October 2026.
- Which products and versions are affected?
- TOTOLINK A950rg 4.1.2cu.5268_B20221104.
- Is there a fix for CVE-2026-114575?
- 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-2026-114575 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-114575?
- Check whether you run TOTOLINK A950rg 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
The UploadCustomModule handler in lib/cste_modules/product.so fails to validate the Action and FileUrl parameters properly, accepting requests that pass minimal checks (Action == "GetCustomModule" and FileUrl contains "custom.so"). The base64-encoded File parameter is copied into a fixed 204800-byte stack buffer using strcpy without length validation, decoded, and written to /tmp/custom_file; an integrity check compares the MD5 of the uploaded file against a user-supplied FileMd5 value, which is trivially bypassed by the attacker computing the MD5 themselves. The file is then loaded by bin/cste_sub (running as root) via system("initcste &"), resulting in arbitrary code execution. No authentication, signature verification, or vendor checks are performed.
Affected products
- TOTOLINK A950RG 4.1.2cu.5268_B20221104
Timeline
- 2026-10-22: disclosed