Threats / Sangoma / CVE-2025-57819
CVE-2025-57819
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-08-07
Sangoma FreePBX vulnerability
Sangoma FreePBX contains an authentication bypass vulnerability allowing unauthenticated access to the administrator interface, enabling arbitrary database manipulation and remote code execution.
Verdict
Today item — known-exploited.
An unauthenticated attacker can bypass authentication due to insufficient input sanitization, gain administrative access to FreePBX, manipulate the database, and execute arbitrary code on the system. This vulnerability is actively exploited in the wild.
CISA KEV Yes · 2025-08-295EPSS 0.88269 (verify live)6Exploit Weaponized · public PoC7CVSS 103CISA SSVC Exploitation: active · Automatable: yes · Impact: total4
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Fully weaponized — public exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
190 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-08-29).
Probability (EPSS)
EPSS 0.88269 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
CVSS 10 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H) · Affected: Sangoma, FreePBX. Confirm exact fixed builds in the vendor advisory.CVSS — CNA-assigned (CVE.org), version 4.0, set at disclosure.
Weakness (CWE)
Mapped to CWE-89 SQL Injection, CWE-288 Auth Bypass via Alternate Path — weakness family: Injection, Authentication.CWE — CNA-assigned (CVE.org); the weakness class drives how the flaw is exploited.
CISA SSVC (triage disposition)
Exploitation: active · Automatable: yes · Technical Impact: totalCISA's own stakeholder-specific triage inputs, published in the CVE record (CISA Coordinator role). NOTE: this is CISA's three decision points; the final Act/Attend/Track decision also requires a Mission & Well-being input not published here, so no overall decision is asserted.
Currency of the record
CISA added this to its KEV catalog 1 day after the CVE record was published.KEV lag = CISA-KEV dateAdded − CVE.org datePublished; a floor on how long the known-exploited flaw sat in the public record before the federal catalog listed it. Severity/weakness here is CNA- or CISA-assigned (current at disclosure), independent of NVD's analysis backlog.
Public exploit available
Public exploit tooling is catalogued for this CVE (a functional/weaponized public exploit). Catalog entries: Metasploit module, nuclei template. We link the catalog page(s) only — no payload or code is hosted or restated here.Link, never host — the catalog page is the source; basicsecurity.net does not redistribute payloads.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft a request that bypasses the authentication mechanism by exploiting insufficient input sanitization in FreePBX.
Business
The organization loses control of access to its communications infrastructure as authentication controls fail to protect the administrator interface.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I gain unauthenticated access to the FreePBX administrator panel without valid credentials.
Business
Administrative privileges are compromised, exposing the entire system to unauthorized modification and control.
3
Lateral reach — past segmentation narrative 3
Attacker
I manipulate the FreePBX database directly through the compromised administrator interface to alter configurations and user data.
Business
Data integrity is compromised, affecting call routing, user accounts, billing records, and system configuration.
4
Data at risk — exfiltration narrative 4
Attacker
I execute arbitrary code on the FreePBX server through the administrative access I obtained.
Business
The organization's communications system is fully compromised, potentially affecting all dependent business operations and exposing sensitive call data.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05
Coverage & confidence
— what we know, and what we don’tEstablished (cited)
Coverage gaps — stated, not hidden
Disclosure & credit2
Catalogued by GitHub_MCNA
Credited with finding itNo finder named in the public CVE record — the work behind this find is unattributed.
Found an error? Propose a correction.
A correction is a cited counter-claim — it must cite a source,
gets reviewed by a second human, and is never auto-applied. See the
correction convention and our identity
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