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CVE-2020-13901

25
FAUCET Score

CVE-2020-13901 describes a critical stack-based buffer overflow vulnerability in the janus_sdp_merge function of janus-gateway (Janus WebRTC Server) versions through 0.10.0. This flaw allows for unauthenticated, remote attackers to achieve complete compromise of confidentiality, integrity, and availability, as indicated by its CVSS score of 9.8. Despite its severe impact, there is currently no public exploit intelligence, active exploitation, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.3.0, <= 0.10.0CPE matchmatch criteria
cpe:2.3:a:meetecho:janus:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.58%
Probability of exploitation in next 30 days
EPSS Percentile
83.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0258 is in the 74th percentile among its peer group of 36,862 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / meetecho/janus-gateway/blob/v0.10.0/sdp.c
Third Party Advisory
github.com / meetecho/janus-gateway/pull/2214
PatchThird Party Advisory
github.com / merrychap/poc_exploits/tree/master/janus-webrtc/CVE-2020-13901
ExploitThird Party Advisory