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Fencer Vulns
critical 9.8

CVE-2020-5722 kev in the critical feed json

The HTTP interface of the Grandstream UCM6200 series is vulnerable to an unauthenticated remote SQL injection via crafted HTTP request.

published 2020-03-23 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-26881

cvss
9.8
version 3.1, CNA
cisa kev
Exploited
added 2022-01-28
epss
84.3%
EPSS 84.3% chance of exploitation in 30 days, percentile 99.7%
public exploits
2
Metasploit, Exploit-DB, plus a Nuclei check

Summary

The HTTP interface of the Grandstream UCM6200 series is vulnerable to an unauthenticated remote SQL injection via crafted HTTP request. An attacker can use this vulnerability to execute shell commands as root on versions before 1.0.19.20 or inject HTML in password recovery emails in versions before 1.0.20.17.

Patch / fix

cisa required action Apply updates per vendor instructions.

  • grandstream ucm6200_firmware 1.0.19.20

Timeline

  1. First public exploit (Metasploit exploit/linux/http/grandstream_ucm62xx_sendemail_rce)
  2. Published
  3. Added to CISA KEV
  4. CISA patch deadline
  5. CISA SSVC: exploitation active

Known exploited

Added
4 y ago
Patch by
2022-07-28 (4 y ago)
Ransomware
Not known
Required action
Apply updates per vendor instructions.
Vendor, product
Grandstream, UCM6200
CISA name
Grandstream Networks UCM6200 Series SQL Injection Vulnerability

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
yes
Technical impact
total
Assessed
21 mo ago

Exploit prediction

84.29% chance of exploitation in the next 30 days, higher than 99.7% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Metasploit exploit/linux/http/grandstream_ucm62xx_sendemail_rce Grandstream UCM62xx IP PBX sendPasswordEmail RCE metasploit exploit, excellent rank, 2020-03-23
  • EDB-48247 UCM6202 1.0.18.13 - Remote Command Injection webapps, 2020-03-24
  • Nuclei template Grandstream UCM6200 - SQL Injection nuclei detection template
  • tenable.com https://www.tenable.com/security/research/tra-2020-15 referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/156876/UCM6202-1.0.18.13-Remote-Command-Injection.html referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/165708/Grandstream-UCM62xx-IP-PBX-sendPasswordEmail-Remote-Code-Execution.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected products

  • n/a Grandstream UCM6200 Series

Classification

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

References

Sources

Fencer Vulns 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.