CVE-2023-37858Network attack vector

Web password disclosure via hardcoded encryption keys

Published Aug 9, 2023 · Updated Aug 2, 2024

Hardcoded keys in Phoenix Contact WP 6xxx firmware before 4.0.10 allow remote authenticated users to decrypt a web application login password. The firmware exposes hardcoded cryptographic keys to an administrator, and those keys decrypt the stored encrypted password. Administrative web access is required; the disclosed credential grants access to the associated web service.

CVSS severity4.9
Medium
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Hardcoded keys in Phoenix Contact WP 6xxx firmware before 4.0.10 allow remote authenticated users to decrypt a web application login password. The firmware exposes hardcoded cryptographic keys to an administrator, and those keys decrypt the stored encrypted password. Administrative web access is required; the disclosed credential grants access to the associated web service.

The record

CVE
CVE-2023-37858
Published
Aug 9, 2023
Updated
Aug 2, 2024
Vendor
Phoenix Contact
Product
WP 6070-WVPS
Classifications
CWE-311, T1555
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 9, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <4.0.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Phoenix Contact · WP 6070-WVPSversion=0 <4.0.10
Phoenix Contact · WP 6156-WHPSversion=0 <4.0.10
Phoenix Contact · WP 6101-WXPSversion=0 <4.0.10
Phoenix Contact · WP 6185-WHPSversion=0 <4.0.10
Phoenix Contact · WP 6215-WHPSversion=0 <4.0.10
Phoenix Contact · WP 6121-WXPSversion=0 <4.0.10

Published CVSS scores

4.9NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
4.9CERT VDECVSS:3.1/AV:N/AC:L/PR:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-311Missing Encryption of Sensitive Data
T1555Credentials from Password Stores

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo