CVE-2022-47034Network attack vector

Unauthenticated account access via loose MD5 comparison

Published Feb 13, 2023 · Updated Mar 21, 2025

Authentication bypass in playSMS 1.4.5 and earlier allows remote attackers to access an account through a crafted password. The auth_validate_login function in web/plugin/core/auth/fn.php uses PHP's loose equality operator to compare submitted and stored MD5 hashes, treating numeric-looking 0e hashes as equal. The target account must have a stored MD5 hash in numeric 0e form; successful exploitation grants that account's authenticated privileges.

CVSS severity9.8
Critical
EPSS probability0.83%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in playSMS 1.4.5 and earlier allows remote attackers to access an account through a crafted password. The auth_validate_login function in web/plugin/core/auth/fn.php uses PHP's loose equality operator to compare submitted and stored MD5 hashes, treating numeric-looking 0e hashes as equal. The target account must have a stored MD5 hash in numeric 0e form; successful exploitation grants that account's authenticated privileges.

The record

CVE
CVE-2022-47034
Published
Feb 13, 2023
Updated
Mar 21, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-697, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 21, 2025Record 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 vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-697Incorrect Comparison
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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