CVE-2022-20660Public exploit

Password disclosure via cleartext flash storage

Published Jan 14, 2022 · Updated Nov 6, 2024

Cleartext credential storage in Cisco Session Initiation Protocol (SIP) Software allows physically proximate attackers to recover phone passwords. The phone firmware writes the administrative phone password without encryption or a suitable cryptographic hash in multiple flash-memory locations. Exploitation requires desoldering and reading a flash chip; recovered shared passwords grant access to administrative settings on other phones.

CVSS severity4.6
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext credential storage in Cisco Session Initiation Protocol (SIP) Software allows physically proximate attackers to recover phone passwords. The phone firmware writes the administrative phone password without encryption or a suitable cryptographic hash in multiple flash-memory locations. Exploitation requires desoldering and reading a flash chip; recovered shared passwords grant access to administrative settings on other phones.

The record

CVE
CVE-2022-20660
Published
Jan 14, 2022
Updated
Nov 6, 2024
Vendor
ClamAV
Product
Cisco Session Initiation Protocol (SIP) Software
Classifications
CWE-312, T1552
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 14, 2022CVE publishedPublication date reported by the CVE source.
  2. Nov 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

ClamAV · Cisco Session Initiation Protocol (SIP) Softwareversion=n/a

Published CVSS scores

4.6Cisco Systems, Inc.CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:X/RL:X/RC:X
2.1NIST NVDAV:L/AC:L/Au:N/C:P/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-312Cleartext Storage of Sensitive Information
T1552Unsecured Credentials

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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