CVE-2026-116779Freeswitch Command Injection
FreeSWITCH: Inbound SIP MESSAGE can select the api chat proto and run FreeSWITCH API commands
Published Nov 5, 2026 · Updated Nov 10, 2026 · Also known as EUVD-2026-117752, GHSA-mg63-h38w-8p9p
Key Facts
Patch immediately- CVE-2026-116779 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Freeswitch.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Nov 9, 2026. A public exploit is reported by tracking sources, but no code link is listed yet.
- EPSS estimates a 1.3% probability of exploitation in the next 30 days.
- Fixed versions are available, including Freeswitch 1.11.3.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Scores
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
1.3%
Higher than 70.6% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
66/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Nov 9, 2026
4 days after publication
Federal due date
Nov 12, 2026
2 days left
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Exploited (KEV)
Public exploit code
2
Proof-of-concept links
In-the-wild evidence
1
Reports of active use
Required action (CISA): Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Advisories And Exploit References
Description
FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to 1.11.3, sofia_presence_handle_sip_i_message() split the To user of an inbound SIP MESSAGE on a plus sign and treated the left side as a chat protocol selector. Selecting the api chat proto reached switch_api_execute(), allowing a peer whose MESSAGE was accepted to run FreeSWITCH API commands, including operating-system command sinks, with the daemon's privileges.
Inbound chat is enabled on the stock internal and external profiles, and any authenticated profile account is sufficient; stock directory users without password material can also remove that barrier in affected configurations. The flaw permits configuration and credential disclosure, arbitrary call control, and command execution, and exploitation has been observed in the wild. This issue is fixed in version 1.11.3.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Nov 9, 2026 | Nov 12, 2026 | Not reported |
| Industry KEV feed | Nov 9, 2026 | Nov 12, 2026 | Not reported |
| CIRCL KEV | Nov 9, 2026 | Nov 12, 2026 | Not reported |
| ENISA EUVD | Nov 9, 2026 | n/a | Not reported |
Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| FreeswitchFreeswitch | See advisory | 1.11.3 |
Patched Releases
Freeswitch
1.11.3
Timeline
Publicly disclosed
Nov 5, 2026
Added to CISA KEV
Nov 9, 2026
Added to Industry KEV feed
Nov 9, 2026
Added to CIRCL KEV
Nov 9, 2026
Added to ENISA EUVD
Nov 9, 2026
Last updated
Nov 10, 2026
Weakness Type
- CWE-77 Improper Neutralization of Special Elements used in a Command
- CWE-78 Improper Neutralization of Special Elements used in an OS Command
- CWE-749 Exposed Dangerous Method or Function
References
- advisorycve.org · CVERecord
- advisorynvd.nist.gov · CVE-2026-116779
- advisorygithub.com · advisories
- advisoryUSOM advisory
- othercisa.gov · known-exploited-vulnerabilities-catalog
FAQ
Common Questions.
FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware.
Affected: Freeswitch. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Nov 9, 2026.
Yes. It was added on Nov 9, 2026 with a federal remediation due date of Nov 12, 2026.
A public exploit is reported by tracking sources, but no code link is listed yet.
Fixed versions are available, including Freeswitch 1.11.3.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2026-116779 On Your Attack Surface?
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