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Fencer Vulns
medium 4.6

CVE-2022-20660 json

Cisco IP Phones Information Disclosure Vulnerability

published 2022-01-14 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-25910

cvss
4.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 30%
public exploits
0
none known

Summary

A vulnerability in the information storage architecture of several Cisco IP Phone models could allow an unauthenticated, physical attacker to obtain confidential information from an affected device. This vulnerability is due to unencrypted storage of confidential information on an affected device. An attacker could exploit this vulnerability by physically extracting and accessing one of the flash memory chips. A successful exploit could allow the attacker to obtain confidential information from the device, which could be used for subsequent attacks.

Patch / fix

  • cisco ip_conference_phone_7832_firmware 14.1\(1\)
  • cisco ip_conference_phone_8832_firmware 14.1\(1\)
  • cisco ip_phone_7811_firmware 14.1\(1\)
  • cisco ip_phone_7821_firmware 14.1\(1\)
  • cisco ip_phone_7841_firmware 14.1\(1\)
  • cisco ip_phone_7861_firmware 14.1\(1\)
  • cisco ip_phone_8811_firmware 14.1\(1\)
  • cisco ip_phone_8841_firmware 14.1\(1\)
  • cisco ip_phone_8845_firmware 14.1\(1\)
  • cisco ip_phone_8851_firmware 14.1\(1\)
  • cisco ip_phone_8861_firmware 14.1\(1\)
  • cisco ip_phone_8865_firmware 14.1\(1\)
  • cisco unified_sip_phone_3905_firmware 9.4\(1\)sr5
  • cisco wireless_ip_phone_8821_firmware 11.0\(6\)sr2
  • cisco wireless_ip_phone_8821-ex_firmware 11.0\(6\)sr2

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.36% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • packetstormsecurity.com http://packetstormsecurity.com/files/165567/Cisco-IP-Phone-Cleartext-Password-Storage.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 4.6 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 3.1 4.6 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • Cisco Cisco Session Initiation Protocol (SIP) Software

Classification

Weakness
  • CWE-312 Cleartext Storage of Sensitive Information

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.