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Fencer Intel
high 7.5

CVE-2020-5724 in the critical feed json

The Grandstream UCM6200 series before 1.0.20.22 is vulnerable to an SQL injection via the HTTP server's websockify endpoint.

published 6y ago modified 4mo ago also EUVD-2020-26883

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
12.2%
EPSS 12.2% chance of exploitation in 30 days, percentile 96%
public exploits
1
Metasploit

Summary

The Grandstream UCM6200 series before 1.0.20.22 is vulnerable to an SQL injection via the HTTP server's websockify endpoint. A remote unauthenticated attacker can invoke the challenge action with a crafted username and discover user passwords.

Patch / fix

  • grandstream ucm6202_firmware 1.0.20.22
  • grandstream ucm6204_firmware 1.0.20.22
  • grandstream ucm6208_firmware 1.0.20.22

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Timeline

  1. First public exploit (Metasploit auxiliary/gather/grandstream_ucm62xx_sql_account_guess)
  2. Published

Exploit prediction

12.16% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • n/a Grandstream UCM6200 series

Classification

Weakness
  • CWE-89 Improper Neutralization of Special Elements used in an SQL Command

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.