CVE-2020-13901
An issue was discovered in janus-gateway (aka Janus WebRTC Server) through 0.10.0. janus_sdp_merge in sdp.c has a stack-based buffer overflow.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.65%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in janus-gateway (aka Janus WebRTC Server) through 0.10.0. janus_sdp_merge in sdp.c has a stack-based buffer overflow.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.65% probability · 85th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- meetecho/janus
- Source
- cve@mitre.org
EPSS 2.6% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/meetecho/janus-gateway/blob/v0.10.0/sdp.c#L1248Third Party Advisory
- https://github.com/meetecho/janus-gateway/pull/2214Patch, Third Party Advisory
- https://github.com/merrychap/poc_exploits/tree/master/janus-webrtc/CVE-2020-13901Exploit, Third Party Advisory
- https://github.com/meetecho/janus-gateway/blob/v0.10.0/sdp.c#L1248Third Party Advisory
- https://github.com/meetecho/janus-gateway/pull/2214Patch, Third Party Advisory
- https://github.com/merrychap/poc_exploits/tree/master/janus-webrtc/CVE-2020-13901Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.