CVE-2021-45461
9.8
CRITICAL · CVSS 3.1 · EPSS 21.7% (pctl 98)
Patch early
EPSS 21.7% — above the 10% action threshold.
Description
FreePBX, when restapps (aka Rest Phone Apps) 15.0.19.87, 15.0.19.88, 16.0.18.40, or 16.0.18.41 is installed, allows remote attackers to execute arbitrary code, as exploited in the wild in December 2021. The fixed versions are 15.0.20 and 16.0.19.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 21.66% — more likely to be exploited than 98% of all CVEs |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2021-12-22 |
| Last modified | 2026-06-17 |
Affected (3)
| Vendor | Product |
|---|---|
| sangoma | freepbx |
| sangoma | pbxact |
| sangoma | restapps |
References
- https://community.freepbx.org/t/0-day-freepbx-exploit/80092
- https://community.freepbx.org/t/security-issue-potential-rest-phone-apps-rce/80109
- https://wiki.freepbx.org/display/FOP/2021-12-21+SECURITY%3A+Potential+Rest+Phone+Apps+RCE
- https://community.freepbx.org/t/0-day-freepbx-exploit/80092
- https://community.freepbx.org/t/security-issue-potential-rest-phone-apps-rce/80109
- https://wiki.freepbx.org/display/FOP/2021-12-21+SECURITY%3A+Potential+Rest+Phone+Apps+RCE
→ the Explorer · watch your stack · NVD