Cyber Resilience

CVE-2024-20357

Medium

Published: 01 May 2024

Published
01 May 2024
Modified
05 January 2026
KEV Added
Patch
CVSS Score v3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS Score 0.0061 70.2th percentile
Risk Priority 12 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-20357 is a medium-severity Out-of-bounds Write (CWE-787) vulnerability in Cisco Ip Phone 6871 With Multiplatform Firmware. Its CVSS base score is 5.9 (Medium).

Operationally, ranked in the top 29.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

A vulnerability in the XML service of Cisco IP Phone firmware could allow an unauthenticated, remote attacker to initiate phone calls on an affected device. This vulnerability exists because bounds-checking does not occur while parsing XML requests. An attacker could…

more

exploit this vulnerability by sending a crafted XML request to an affected device. A successful exploit could allow the attacker to initiate calls or play sounds on the device.

CWE(s)

Related Threats

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

Affected Assets

cisco
ip phone 6871 with multiplatform firmware
≤ 12.0.4
cisco
ip phone 7811 with multiplatform firmware
≤ 12.0.4
cisco
ip phone 7821 with multiplatform firmware
≤ 12.0.4
cisco
ip phone 7832 with multiplatform firmware
≤ 12.0.4
cisco
ip phone 7841 with multiplatform firmware
≤ 12.0.4
cisco
ip phone 7861 with multiplatform firmware
≤ 12.0.4
cisco
ip phone 8811 with multiplatform firmware
≤ 12.0.4
cisco
ip phone 8832 with multiplatform firmware
≤ 12.0.4
cisco
ip phone 8841 with multiplatform firmware
≤ 12.0.4
cisco
ip phone 8845 with multiplatform firmware
≤ 12.0.4
+8 more product configuration(s) — see NVD for full list

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-787

Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.

References