CVE-2022-28218

Local credential disclosure via exposed Roundcube keys

Published Apr 26, 2022 · Updated Aug 3, 2024

Information disclosure in CipherMail Webmail Messenger 1.1.1 through 4.1.4 allows local users to obtain password and 2FA protection keys. The Roundcube configuration stores secret keys with inadequate protection, letting a local attacker read them and potentially decrypt passwords or bypass two-factor authentication. Exploitation requires local access to the installation; the documented impact is credential and authentication-secret disclosure without reported integrity or availability effects.

CVSS severity5.5
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in CipherMail Webmail Messenger 1.1.1 through 4.1.4 allows local users to obtain password and 2FA protection keys. The Roundcube configuration stores secret keys with inadequate protection, letting a local attacker read them and potentially decrypt passwords or bypass two-factor authentication. Exploitation requires local access to the installation; the documented impact is credential and authentication-secret disclosure without reported integrity or availability effects.

The record

CVE
CVE-2022-28218
Published
Apr 26, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-276, T1552.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 26, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

2.1NVDAV:L/AC:L/Au:N/C:P/I:N/A:N
5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-276Incorrect Default Permissions
T1552.001Unsecured Credentials

Public exploit references

No public exploit references are available in this record.

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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