CVE-2019-19006
CVE-2019-19006 is a security flaw in Sangoma FreePBX. Attackers can get into Sangoma FreePBX without a valid password. The US Cybersecurity and Infrastructure Security Agency (CISA) added it to its catalog of flaws known to be used in attacks on 3 Feb 2026.[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 improper authentication in Sangoma FreePBX. In its words: “Sangoma FreePBX contains an improper authentication vulnerability that potentially allows unauthorized users to bypass password authentication and access services provided by the FreePBX admin.”[1]
The underlying weakness is improper authentication (CWE-287), in MITRE’s list of common software weaknesses.[2]
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 3 Feb 2026, 2,266 days after it was made public. CISA lists a flaw only when it has reliable evidence of it being exploited, and gave US federal agencies until 24 Feb 2026 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 56%. 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 24 Feb 2026 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 56%.[4] |
See also
Other Sangoma FreePBX flaws
- CVE-2025-64328: OS command injection ·
- CVE-2025-57819: authentication bypass ·
Other Sangoma flaws
- CVE-2026-9586, Sangoma Switchvox: SQL injection ·
Other improper authentication flaws
- CVE-2026-105133, AhsayCBS: improper authentication ·
- CVE-2026-42018, JFrog Artifactory: improper authentication ·
- CVE-2026-82329, JFrog Artifactory: improper authentication ·
- CVE-2026-59822, BerriAI LiteLLM: improper authentication ·
- CVE-2023-49105, ownCloud: improper authentication ·
Added the same day
- CVE-2025-64328, Sangoma FreePBX: OS command injection ·
- CVE-2025-40551, SolarWinds Web Help Desk: deserialization of untrusted data ·
- CVE-2021-39935, GitLab Community and Enterprise Editions: server-side request forgery (SSRF) ·
Every Sangoma flaw on CISA’s list · Everything added in February 2026
References
- ^ Cybersecurity and Infrastructure Security Agency. “Sangoma FreePBX Improper Authentication Vulnerability”. Known Exploited Vulnerabilities Catalog, added 3 Feb 2026.
- ^ National Institute of Standards and Technology. “CVE-2019-19006 Detail”. National Vulnerability Database, published 21 Nov 2019.
- ^ Sangoma. Advisories and fixes: wiki.freepbx.org, community.freepbx.org, wiki.freepbx.org.
- ^ FIRST. “Exploit Prediction Scoring System”. EPSS 0.559, percentile 99.0, 31 Oct 2026.
- CVE Program. “CVE-2019-19006”. 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.