Security readout for executives and security teams
Plain-English summary
CVE-2018-19911 can let an internet-reachable FreeSWITCH server run operating-system commands if the optional XML-RPC module is enabled. The issue affects FreeSWITCH through 1.8.2. The source bundle includes public proof-of-concept references, but no CISA KEV listing or confirmed active exploitation evidence.
Executive priority
Treat this as urgent for any exposed FreeSWITCH system because the impact is remote command execution. Prioritize internet-facing or partner-facing systems first, then internal administrative interfaces.
Technical view
When mod_xml_rpc is enabled, FreeSWITCH through 1.8.2 exposes command-execution functionality through XML-RPC query paths on TCP 8080. The CVE also notes possible CSRF exploitation and occasional abuse of the default freeswitch account password. No CVSS, CWE, or vendor fix details are provided in the bundle.
Likely exposure
Exposure is most likely where FreeSWITCH through 1.8.2 runs mod_xml_rpc and TCP 8080 is reachable from untrusted networks or browsers. Risk increases if default credentials remain valid.
Exploitation context
Public proof-of-concept material exists in the cited references. The bundle does not show CISA KEV status or other evidence of active exploitation, so active exploitation should not be asserted from these sources alone.
Researcher notes
The source bundle is sparse: no CVSS vector, CWE mapping, fixed version, or vendor advisory is included. The strongest evidence is the CVE description and public PoC references. Validate exposure defensively without running exploit payloads.
Mitigation direction
- Check FreeSWITCH vendor guidance for fixed versions and supported upgrade paths.
- Disable mod_xml_rpc if XML-RPC administration is not required.
- Restrict TCP 8080 access to trusted administrative networks only.
- Change any default freeswitch credentials and review account access controls.
- Assess CSRF exposure for any browser-accessible administrative workflows.
Validation and detection
- Inventory FreeSWITCH systems and identify versions through 1.8.2.
- Confirm whether mod_xml_rpc is enabled on each instance.
- Verify whether TCP 8080 is reachable from untrusted networks.
- Review authentication settings for default or weak freeswitch credentials.
- Search access logs for suspicious XML-RPC system command requests.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
Credential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2018-19911 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/iSafeBlue/freeswitch_rce/blob/master/freeswitch_rce.pyCVE reference · x_refsource_MISC
- https://github.com/iSafeBlue/freeswitch_rce/blob/master/README-en.mdCVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.