CVE-2021-35402
OS command injection via ip param in live_api.cgi on PROLiNK PRC2402M.
Is CVE-2021-35402 being exploited?
Not confirmed. CVE-2021-35402 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.95% probability of exploitation in the next 30 days.
How severe is CVE-2021-35402?
CVE-2021-35402 is rated Critical with a CVSS score of 10.0. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2021-35402?
Yes. A fix has been recorded for CVE-2021-35402. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2021-35402 affect?
CVE-2021-35402 affects PROLiNK PRC2402M router, live_api.cgi (satellite_list, satellite_status). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2021-35402?
Apply firmware update when available; restrict web/API access to trusted networks.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution via crafted ip parameter; attacker can run arbitrary commands and take control of the device.
Patch when possible
- affected>= 20190909 and < 2021-06-13
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.