CVE-2025-57819
CVE-2025-57819 is a security flaw in Sangoma FreePBX. Attackers can run their own code on Sangoma FreePBX from anywhere, without logging in. The US Cybersecurity and Infrastructure Security Agency (CISA) added it to its catalog of flaws known to be used in attacks on 29 Aug 2025.[1]
Sangoma FreePBX is business software or equipment. Most families won’t have it, but attackers break into it to get inside companies, and from there to what those companies hold about their customers, patients and staff. Sangoma has published a fix or advice.
Description
CISA calls it an authentication bypass in Sangoma FreePBX. In its words: “Sangoma FreePBX contains an authentication bypass vulnerability due to insufficiently sanitized user-supplied data allows unauthenticated access to FreePBX Administrator leading to arbitrary database manipulation and remote code execution.”[1]
The CVE record adds: “FreePBX is an open-source web-based graphical user interface. FreePBX 15, 16, and 17 endpoints are vulnerable due to insufficiently sanitized user-supplied data allowing unauthenticated access to FreePBX Administrator leading to arbitrary database manipulation and remote code execution. This issue has been patched in endpoint versions 15.0.66, 16.0.89, and 17.0.3.”[2]
The underlying weakness is SQL injection (CWE-89), authentication bypass (CWE-288), in MITRE’s list of common software weaknesses.
It scores 9.8 out of 10 on the Common Vulnerability Scoring System, which rates it critical, scored by NVD using CVSS 3.1.[2]
Affected versions
NVD’s record doesn’t list version ranges for it; Sangoma’s advisory has them[3]. CISA names the product as Sangoma FreePBX.
Most families won’t have Sangoma FreePBX; it’s for whoever looks after IT at work.
Exploitation
CISA added it to its catalog of known exploited vulnerabilities on 29 Aug 2025, within a day of it being made public. CISA lists a flaw only when it has reliable evidence of it being exploited, and gave US federal agencies until 19 Sep 2025 to fix it.[1]
FIRST’s Exploit Prediction Scoring System, which estimates how likely a flaw is to be used in attacks in the next 30 days from what it sees across the internet, puts it at 95%. That’s in the top 1% of the flaws it scores.[4]
CISA assesses it as automatable: attackers can run it against many targets at once.
CISA doesn’t say who was attacked, or how.
Fix
Sangoma has published a fix or advice.[3] CISA’s required action: “Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.”[1]
- Check whether you use it.Sangoma FreePBX is business software or equipment, so most families won’t have it. If you run a business, or work from home on company equipment, ask whoever looks after your IT.
- Send this page to your IT person.Ask them to confirm it’s fixed, or not in use. CISA gave US government agencies until 19 Sep 2025 to fix it.
- If it can’t be fixed, take it offline.CISA’s advice when there’s no fix is to stop using the product, or take it off the internet, until there is one.
You can’t fix someone else’s server, but you can watch for what follows a break-in like this: a breach notice, a password reset you didn’t ask for, or a scam message that knows things it shouldn’t. HARD watches for those for you and your family.
Timeline
| Date | Event |
|---|---|
| The flaw is made public in the National Vulnerability Database, with a severity score of 9.8.[2] | |
| CISA adds it to its catalog of flaws known to be used in attacks.[1] | |
| CISA’s deadline for US government agencies to fix it.[1] | |
| FIRST puts the odds of it being used in attacks in the next 30 days at 95%.[4] |
See also
Other Sangoma FreePBX flaws
- CVE-2025-64328: OS command injection ·
- CVE-2019-19006: improper authentication ·
Other Sangoma flaws
- CVE-2026-9586, Sangoma Switchvox: SQL injection ·
Other SQL injection flaws
- CVE-2026-114625, Arista VeloCloud Orchestrator: SQL injection ·
- CVE-2026-76461, Cisco Secure Email Gateway: SQL injection ·
- CVE-2026-72898, Metabase: SQL injection ·
- CVE-2026-60137, WordPress Core: SQL injection ·
- CVE-2026-9082, Drupal Core: SQL injection ·
Every Sangoma flaw on CISA’s list · Everything added in August 2025
References
- ^ Cybersecurity and Infrastructure Security Agency. “Sangoma FreePBX Authentication Bypass Vulnerability”. Known Exploited Vulnerabilities Catalog, added 29 Aug 2025.
- ^ National Institute of Standards and Technology. “CVE-2025-57819 Detail”. National Vulnerability Database, published 28 Aug 2025.
- ^ Sangoma. Advisories and fixes: github.com, community.freepbx.org.
- ^ FIRST. “Exploit Prediction Scoring System”. EPSS 0.952, percentile 99.9, 31 Oct 2026.
- CVE Program. “CVE-2025-57819”. The official CVE record.
This article is built from CISA’s catalog (version 2026.10.30), NVD’s record and FIRST’s scores, kept in HARD’s database and checked every morning. The plain English is HARD’s.