Medium severity · published May 1, 2024
CVE-2024-20357
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
5.9
CVSS
0.5%
EPSS
No
On KEV
Description
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 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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CI
Cisco IP Phones with Multiplatform Firmware · Cisco
11.3.1 MSR2-6; 11.3.1 MSR3-3; 11.3.2; 11.3.3; 11.3.1 MSR4-1; 11.3.4; +34 more · source: vendor
CP
Cisco PhoneOS · Cisco
1.0.1; 2.1.1; 2.0.1; 2.3.1 · source: vendor
IP
IP Phone 6821 With Multiplatform Firmware · Cisco
through 12.0.4 · source: NVD, CISA
IP
IP Phone 6841 With Multiplatform Firmware · Cisco
through 12.0.4 · source: NVD, CISA
IP
IP Phone 6851 With Multiplatform Firmware · Cisco
through 12.0.4 · source: NVD, CISA
IP
IP Phone 6861 With Multiplatform Firmware · Cisco
through 12.0.4 · source: NVD, CISA
IP
IP Phone 6871 With Multiplatform Firmware · Cisco
through 12.0.4 · source: NVD, CISA
IP
IP Phone 7811 With Multiplatform Firmware · Cisco
through 12.0.4 · source: NVD, CISA
IP
IP Phone 7821 With Multiplatform Firmware · Cisco
through 12.0.4 · source: NVD, CISA
IP
IP Phone 7832 With Multiplatform Firmware · Cisco
through 12.0.4 · source: NVD
IP
IP Phone 7841 With Multiplatform Firmware · Cisco
through 12.0.4 · source: NVD, CISA
IP
IP Phone 7861 With Multiplatform Firmware · Cisco
through 12.0.4 · source: NVD, CISA
Affected product
CI
Cisco IP Phones with Multiplatform Firmware
Cisco
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-20357
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-20357
Vendor Advisory
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipphone-multi-vulns-cXAhCvS
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