Cyber Resilience

CVE-2021-43610

High

Published: 12 November 2021

Published
12 November 2021
Modified
21 November 2024
KEV Added
—
Patch
—
CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0053 67.7th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-43610 is a high-severity HTTP Request/Response Smuggling (CWE-444) vulnerability in Linphone Belle-Sip. Its CVSS base score is 7.5 (High).

Operationally, ranked in the top 32.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Belledonne Belle-sip before 5.0.20 can crash applications such as Linphone via an invalid From header (request URI without a parameter) in an unauthenticated SIP message, a different issue than CVE-2021-33056.

CWE(s)
CWE-444

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

linphone
belle-sip
≤ 5.0.20

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References