CVEDB API

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-116567

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 1.11.2, rtmp_handle_control() rendered an RTMP user-control message into a 200-byte stack buffer using an unbounded sprintf loop controlled by the wire message length. A body of roughly 70 bytes or more overflowed the stack before any RTMP login, because the handshake authenticates neither side. The flaw affects deployments that build and load mod_rtmp, which is disabled in the stock build and configuration but commonly exposes a listener on TCP port 1935 when enabled. One unauthenticated message can crash FreeSWITCH and end every active call; the constrained ASCII hex output has not yielded control-flow hijacking. This issue is fixed in version 1.11.2.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.004

EPSS Ranking 38.0%

CVSS Severity

CVSS v3 Score 7.5

References

Products affected by CVE-2026-116567

Freeswitch » Freeswitch » Version: 0.0.1

cpe:2.3:a:freeswitch:freeswitch:0.0.1
Freeswitch » Freeswitch » Version: 1.0.0

cpe:2.3:a:freeswitch:freeswitch:1.0.0
Freeswitch » Freeswitch » Version: 1.0.1

cpe:2.3:a:freeswitch:freeswitch:1.0.1
Freeswitch » Freeswitch » Version: 1.0.2

cpe:2.3:a:freeswitch:freeswitch:1.0.2
Freeswitch » Freeswitch » Version: 1.0.3

cpe:2.3:a:freeswitch:freeswitch:1.0.3
Freeswitch » Freeswitch » Version: 1.0.4

cpe:2.3:a:freeswitch:freeswitch:1.0.4
Freeswitch » Freeswitch » Version: 1.0.5

cpe:2.3:a:freeswitch:freeswitch:1.0.5
Freeswitch » Freeswitch » Version: 1.0.6

cpe:2.3:a:freeswitch:freeswitch:1.0.6
Freeswitch » Freeswitch » Version: 1.10.0

cpe:2.3:a:freeswitch:freeswitch:1.10.0
Freeswitch » Freeswitch » Version: 1.10.1

cpe:2.3:a:freeswitch:freeswitch:1.10.1
Freeswitch » Freeswitch » Version: 1.10.10

cpe:2.3:a:freeswitch:freeswitch:1.10.10
Freeswitch » Freeswitch » Version: 1.10.11

cpe:2.3:a:freeswitch:freeswitch:1.10.11
Freeswitch » Freeswitch » Version: 1.10.12

cpe:2.3:a:freeswitch:freeswitch:1.10.12
Freeswitch » Freeswitch » Version: 1.10.2

cpe:2.3:a:freeswitch:freeswitch:1.10.2
Freeswitch » Freeswitch » Version: 1.10.3

cpe:2.3:a:freeswitch:freeswitch:1.10.3
Freeswitch » Freeswitch » Version: 1.10.4

cpe:2.3:a:freeswitch:freeswitch:1.10.4
Freeswitch » Freeswitch » Version: 1.10.5

cpe:2.3:a:freeswitch:freeswitch:1.10.5
Freeswitch » Freeswitch » Version: 1.10.6

cpe:2.3:a:freeswitch:freeswitch:1.10.6
Freeswitch » Freeswitch » Version: 1.10.7

cpe:2.3:a:freeswitch:freeswitch:1.10.7
Freeswitch » Freeswitch » Version: 1.10.8

cpe:2.3:a:freeswitch:freeswitch:1.10.8
Freeswitch » Freeswitch » Version: 1.10.9

cpe:2.3:a:freeswitch:freeswitch:1.10.9
Freeswitch » Freeswitch » Version: 1.11.0

cpe:2.3:a:freeswitch:freeswitch:1.11.0
Freeswitch » Freeswitch » Version: 1.11.1

cpe:2.3:a:freeswitch:freeswitch:1.11.1
Freeswitch » Freeswitch » Version: 1.2

cpe:2.3:a:freeswitch:freeswitch:1.2
Freeswitch » Freeswitch » Version: 1.2.1

cpe:2.3:a:freeswitch:freeswitch:1.2.1
Freeswitch » Freeswitch » Version: 1.2.10

cpe:2.3:a:freeswitch:freeswitch:1.2.10
Freeswitch » Freeswitch » Version: 1.2.12

cpe:2.3:a:freeswitch:freeswitch:1.2.12
Freeswitch » Freeswitch » Version: 1.2.13

cpe:2.3:a:freeswitch:freeswitch:1.2.13
Freeswitch » Freeswitch » Version: 1.2.14

cpe:2.3:a:freeswitch:freeswitch:1.2.14
Freeswitch » Freeswitch » Version: 1.2.15

cpe:2.3:a:freeswitch:freeswitch:1.2.15
Freeswitch » Freeswitch » Version: 1.2.16

cpe:2.3:a:freeswitch:freeswitch:1.2.16
Freeswitch » Freeswitch » Version: 1.2.17

cpe:2.3:a:freeswitch:freeswitch:1.2.17
Freeswitch » Freeswitch » Version: 1.2.18

cpe:2.3:a:freeswitch:freeswitch:1.2.18
Freeswitch » Freeswitch » Version: 1.2.19

cpe:2.3:a:freeswitch:freeswitch:1.2.19
Freeswitch » Freeswitch » Version: 1.2.2

cpe:2.3:a:freeswitch:freeswitch:1.2.2
Freeswitch » Freeswitch » Version: 1.2.20

cpe:2.3:a:freeswitch:freeswitch:1.2.20
Freeswitch » Freeswitch » Version: 1.2.21

cpe:2.3:a:freeswitch:freeswitch:1.2.21
Freeswitch » Freeswitch » Version: 1.2.22

cpe:2.3:a:freeswitch:freeswitch:1.2.22
Freeswitch » Freeswitch » Version: 1.2.23

cpe:2.3:a:freeswitch:freeswitch:1.2.23
Freeswitch » Freeswitch » Version: 1.2.3

cpe:2.3:a:freeswitch:freeswitch:1.2.3
Freeswitch » Freeswitch » Version: 1.2.4

cpe:2.3:a:freeswitch:freeswitch:1.2.4
Freeswitch » Freeswitch » Version: 1.2.5

cpe:2.3:a:freeswitch:freeswitch:1.2.5
Freeswitch » Freeswitch » Version: 1.2.5.1

cpe:2.3:a:freeswitch:freeswitch:1.2.5.1
Freeswitch » Freeswitch » Version: 1.2.5.2

cpe:2.3:a:freeswitch:freeswitch:1.2.5.2
Freeswitch » Freeswitch » Version: 1.2.5.3

cpe:2.3:a:freeswitch:freeswitch:1.2.5.3
Freeswitch » Freeswitch » Version: 1.2.6

cpe:2.3:a:freeswitch:freeswitch:1.2.6
Freeswitch » Freeswitch » Version: 1.2.7

cpe:2.3:a:freeswitch:freeswitch:1.2.7
Freeswitch » Freeswitch » Version: 1.2.8

cpe:2.3:a:freeswitch:freeswitch:1.2.8
Freeswitch » Freeswitch » Version: 1.2.9

cpe:2.3:a:freeswitch:freeswitch:1.2.9
Freeswitch » Freeswitch » Version: 1.3.0

cpe:2.3:a:freeswitch:freeswitch:1.3.0
Freeswitch » Freeswitch » Version: 1.3.1

cpe:2.3:a:freeswitch:freeswitch:1.3.1
Freeswitch » Freeswitch » Version: 1.3.10

cpe:2.3:a:freeswitch:freeswitch:1.3.10
Freeswitch » Freeswitch » Version: 1.3.11

cpe:2.3:a:freeswitch:freeswitch:1.3.11
Freeswitch » Freeswitch » Version: 1.3.12

cpe:2.3:a:freeswitch:freeswitch:1.3.12
Freeswitch » Freeswitch » Version: 1.3.13

cpe:2.3:a:freeswitch:freeswitch:1.3.13
Freeswitch » Freeswitch » Version: 1.3.14

cpe:2.3:a:freeswitch:freeswitch:1.3.14
Freeswitch » Freeswitch » Version: 1.3.15

cpe:2.3:a:freeswitch:freeswitch:1.3.15
Freeswitch » Freeswitch » Version: 1.3.16

cpe:2.3:a:freeswitch:freeswitch:1.3.16
Freeswitch » Freeswitch » Version: 1.3.17

cpe:2.3:a:freeswitch:freeswitch:1.3.17
Freeswitch » Freeswitch » Version: 1.3.2

cpe:2.3:a:freeswitch:freeswitch:1.3.2
Freeswitch » Freeswitch » Version: 1.3.3

cpe:2.3:a:freeswitch:freeswitch:1.3.3
Freeswitch » Freeswitch » Version: 1.3.4

cpe:2.3:a:freeswitch:freeswitch:1.3.4
Freeswitch » Freeswitch » Version: 1.3.5

cpe:2.3:a:freeswitch:freeswitch:1.3.5
Freeswitch » Freeswitch » Version: 1.3.6

cpe:2.3:a:freeswitch:freeswitch:1.3.6
Freeswitch » Freeswitch » Version: 1.3.7

cpe:2.3:a:freeswitch:freeswitch:1.3.7
Freeswitch » Freeswitch » Version: 1.3.8

cpe:2.3:a:freeswitch:freeswitch:1.3.8
Freeswitch » Freeswitch » Version: 1.3.9

cpe:2.3:a:freeswitch:freeswitch:1.3.9
Freeswitch » Freeswitch » Version: 1.4.1

cpe:2.3:a:freeswitch:freeswitch:1.4.1
Freeswitch » Freeswitch » Version: 1.4.10

cpe:2.3:a:freeswitch:freeswitch:1.4.10
Freeswitch » Freeswitch » Version: 1.4.11

cpe:2.3:a:freeswitch:freeswitch:1.4.11
Freeswitch » Freeswitch » Version: 1.4.12

cpe:2.3:a:freeswitch:freeswitch:1.4.12
Freeswitch » Freeswitch » Version: 1.4.13

cpe:2.3:a:freeswitch:freeswitch:1.4.13
Freeswitch » Freeswitch » Version: 1.4.14

cpe:2.3:a:freeswitch:freeswitch:1.4.14
Freeswitch » Freeswitch » Version: 1.4.15

cpe:2.3:a:freeswitch:freeswitch:1.4.15
Freeswitch » Freeswitch » Version: 1.4.16

cpe:2.3:a:freeswitch:freeswitch:1.4.16
Freeswitch » Freeswitch » Version: 1.4.17

cpe:2.3:a:freeswitch:freeswitch:1.4.17
Freeswitch » Freeswitch » Version: 1.4.18

cpe:2.3:a:freeswitch:freeswitch:1.4.18
Freeswitch » Freeswitch » Version: 1.4.19

cpe:2.3:a:freeswitch:freeswitch:1.4.19
Freeswitch » Freeswitch » Version: 1.4.2

cpe:2.3:a:freeswitch:freeswitch:1.4.2
Freeswitch » Freeswitch » Version: 1.4.20

cpe:2.3:a:freeswitch:freeswitch:1.4.20
Freeswitch » Freeswitch » Version: 1.4.21

cpe:2.3:a:freeswitch:freeswitch:1.4.21
Freeswitch » Freeswitch » Version: 1.4.22

cpe:2.3:a:freeswitch:freeswitch:1.4.22
Freeswitch » Freeswitch » Version: 1.4.23

cpe:2.3:a:freeswitch:freeswitch:1.4.23
Freeswitch » Freeswitch » Version: 1.4.24

cpe:2.3:a:freeswitch:freeswitch:1.4.24
Freeswitch » Freeswitch » Version: 1.4.25

cpe:2.3:a:freeswitch:freeswitch:1.4.25
Freeswitch » Freeswitch » Version: 1.4.26

cpe:2.3:a:freeswitch:freeswitch:1.4.26
Freeswitch » Freeswitch » Version: 1.4.4

cpe:2.3:a:freeswitch:freeswitch:1.4.4
Freeswitch » Freeswitch » Version: 1.4.5

cpe:2.3:a:freeswitch:freeswitch:1.4.5
Freeswitch » Freeswitch » Version: 1.4.6

cpe:2.3:a:freeswitch:freeswitch:1.4.6
Freeswitch » Freeswitch » Version: 1.4.7

cpe:2.3:a:freeswitch:freeswitch:1.4.7
Freeswitch » Freeswitch » Version: 1.4.8

cpe:2.3:a:freeswitch:freeswitch:1.4.8
Freeswitch » Freeswitch » Version: 1.4.9

cpe:2.3:a:freeswitch:freeswitch:1.4.9
Freeswitch » Freeswitch » Version: 1.5.0

cpe:2.3:a:freeswitch:freeswitch:1.5.0
Freeswitch » Freeswitch » Version: 1.5.1

cpe:2.3:a:freeswitch:freeswitch:1.5.1
Freeswitch » Freeswitch » Version: 1.5.10

cpe:2.3:a:freeswitch:freeswitch:1.5.10
Freeswitch » Freeswitch » Version: 1.5.11

cpe:2.3:a:freeswitch:freeswitch:1.5.11
Freeswitch » Freeswitch » Version: 1.5.12

cpe:2.3:a:freeswitch:freeswitch:1.5.12
Freeswitch » Freeswitch » Version: 1.5.13

cpe:2.3:a:freeswitch:freeswitch:1.5.13
Freeswitch » Freeswitch » Version: 1.5.14

cpe:2.3:a:freeswitch:freeswitch:1.5.14
Freeswitch » Freeswitch » Version: 1.5.2

cpe:2.3:a:freeswitch:freeswitch:1.5.2
Freeswitch » Freeswitch » Version: 1.5.3

cpe:2.3:a:freeswitch:freeswitch:1.5.3
Freeswitch » Freeswitch » Version: 1.5.4

cpe:2.3:a:freeswitch:freeswitch:1.5.4
Freeswitch » Freeswitch » Version: 1.5.5

cpe:2.3:a:freeswitch:freeswitch:1.5.5
Freeswitch » Freeswitch » Version: 1.5.6

cpe:2.3:a:freeswitch:freeswitch:1.5.6
Freeswitch » Freeswitch » Version: 1.5.7

cpe:2.3:a:freeswitch:freeswitch:1.5.7
Freeswitch » Freeswitch » Version: 1.5.8

cpe:2.3:a:freeswitch:freeswitch:1.5.8
Freeswitch » Freeswitch » Version: 1.5.9

cpe:2.3:a:freeswitch:freeswitch:1.5.9
Freeswitch » Freeswitch » Version: 1.6.0

cpe:2.3:a:freeswitch:freeswitch:1.6.0
Freeswitch » Freeswitch » Version: 1.6.10

cpe:2.3:a:freeswitch:freeswitch:1.6.10
Freeswitch » Freeswitch » Version: 1.6.11

cpe:2.3:a:freeswitch:freeswitch:1.6.11
Freeswitch » Freeswitch » Version: 1.6.12

cpe:2.3:a:freeswitch:freeswitch:1.6.12
Freeswitch » Freeswitch » Version: 1.6.13

cpe:2.3:a:freeswitch:freeswitch:1.6.13
Freeswitch » Freeswitch » Version: 1.6.14

cpe:2.3:a:freeswitch:freeswitch:1.6.14
Freeswitch » Freeswitch » Version: 1.6.15

cpe:2.3:a:freeswitch:freeswitch:1.6.15
Freeswitch » Freeswitch » Version: 1.6.16

cpe:2.3:a:freeswitch:freeswitch:1.6.16
Freeswitch » Freeswitch » Version: 1.6.17

cpe:2.3:a:freeswitch:freeswitch:1.6.17
Freeswitch » Freeswitch » Version: 1.6.18

cpe:2.3:a:freeswitch:freeswitch:1.6.18
Freeswitch » Freeswitch » Version: 1.6.19

cpe:2.3:a:freeswitch:freeswitch:1.6.19
Freeswitch » Freeswitch » Version: 1.6.2

cpe:2.3:a:freeswitch:freeswitch:1.6.2
Freeswitch » Freeswitch » Version: 1.6.20

cpe:2.3:a:freeswitch:freeswitch:1.6.20
Freeswitch » Freeswitch » Version: 1.6.3

cpe:2.3:a:freeswitch:freeswitch:1.6.3
Freeswitch » Freeswitch » Version: 1.6.4

cpe:2.3:a:freeswitch:freeswitch:1.6.4
Freeswitch » Freeswitch » Version: 1.6.5

cpe:2.3:a:freeswitch:freeswitch:1.6.5
Freeswitch » Freeswitch » Version: 1.6.6

cpe:2.3:a:freeswitch:freeswitch:1.6.6
Freeswitch » Freeswitch » Version: 1.6.7

cpe:2.3:a:freeswitch:freeswitch:1.6.7
Freeswitch » Freeswitch » Version: 1.6.8

cpe:2.3:a:freeswitch:freeswitch:1.6.8
Freeswitch » Freeswitch » Version: 1.6.9

cpe:2.3:a:freeswitch:freeswitch:1.6.9
Freeswitch » Freeswitch » Version: 1.7.0

cpe:2.3:a:freeswitch:freeswitch:1.7.0
Freeswitch » Freeswitch » Version: 1.8.0

cpe:2.3:a:freeswitch:freeswitch:1.8.0
Freeswitch » Freeswitch » Version: 1.8.1

cpe:2.3:a:freeswitch:freeswitch:1.8.1
Freeswitch » Freeswitch » Version: 1.8.2

cpe:2.3:a:freeswitch:freeswitch:1.8.2
Freeswitch » Freeswitch » Version: 1.8.3

cpe:2.3:a:freeswitch:freeswitch:1.8.3
Freeswitch » Freeswitch » Version: 1.8.4

cpe:2.3:a:freeswitch:freeswitch:1.8.4
Freeswitch » Freeswitch » Version: 1.8.5

cpe:2.3:a:freeswitch:freeswitch:1.8.5
Freeswitch » Freeswitch » Version: 1.8.6

cpe:2.3:a:freeswitch:freeswitch:1.8.6
Freeswitch » Freeswitch » Version: 1.8.7

cpe:2.3:a:freeswitch:freeswitch:1.8.7

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-116567

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