How severe is CVE-2020-13900?

CVE-2020-13900 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-13900 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-13900?

CVE-2020-13900 affects Meetecho Janus. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-13900?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-13900 published?

CVE-2020-13900 was published on 2020-06-10 and last updated on 2026-06-17.

CVE-2020-13900

CVE-2020-13900 is a high-severity vulnerability in Meetecho Janus with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Meetecho Janus
Published: 2020-06-10
Last modified: 2026-06-17

Description

An issue was discovered in janus-gateway (aka Janus WebRTC Server) through 0.10.0. janus_sdp_preparse in sdp.c has a NULL pointer dereference.

Frequently asked questions

What is CVE-2020-13900?: An issue was discovered in janus-gateway (aka Janus WebRTC Server) through 0.10.0. janus_sdp_preparse in sdp.c has a NULL pointer dereference.
How severe is CVE-2020-13900?: CVE-2020-13900 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-13900 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-13900?: CVE-2020-13900 affects Meetecho Janus. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-13900?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-13900 published?: CVE-2020-13900 was published on 2020-06-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:meetecho:janus:*:*:*:*:*:*:*:*

More vulnerabilities in Meetecho Janus

CVE-2020-14034 — Critical (CVSS 9.8): An issue was discovered in janus-gateway (aka Janus WebRTC Server) through 0.10.0. janus_get_codec_from_pt in utils.c…
CVE-2020-14033 — Critical (CVSS 9.8): An issue was discovered in janus-gateway (aka Janus WebRTC Server) through 0.10.0. janus_streaming_rtsp_parse_sdp in…
CVE-2020-13901 — Critical (CVSS 9.8): An issue was discovered in janus-gateway (aka Janus WebRTC Server) through 0.10.0. janus_sdp_merge in sdp.c has a…
CVE-2020-10574 — Critical (CVSS 9.8): An issue was discovered in Janus through 0.9.1. janus.c tries to use a string that doesn't actually exist during a…
CVE-2020-13899 — High (CVSS 7.5): An issue was discovered in janus-gateway (aka Janus WebRTC Server) through 0.10.0. janus_process_incoming_request in…
CVE-2020-13898 — High (CVSS 7.5): An issue was discovered in janus-gateway (aka Janus WebRTC Server) through 0.10.0. janus_sdp_process in sdp.c has a…

All CVEs affecting Meetecho Janus →

Other CWE-476 (NULL Pointer Dereference) vulnerabilities

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CVE-2020-14500 — Critical (CVSS 10.0): Secomea GateManager all versions prior to 9.2c, An attacker can send a negative value and overwrite arbitrary data.
CVE-2010-2495 — Critical (CVSS 10.0): The pppol2tp_xmit function in drivers/net/pppol2tp.c in the L2TP implementation in the Linux kernel before 2.6.34 does…
CVE-2026-46195 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: smb: client: validate dacloffset before building…
CVE-2026-31657 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: batman-adv: hold claim backbone gateways by…
CVE-2026-31436 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: fix possible wrong descriptor…

Browse all CWE-476 (NULL Pointer Dereference) vulnerabilities →