CVE-2023-37857 | PHOENIX CONTACT: Use of Hard-coded Credentials in WP 6xxx Web panels

In PHOENIX CONTACTs WP 6xxx series web panels in versions prior to 4.0.10 an authenticated, remote attacker with admin privileges is able to read hardcoded cryptographic keys allowing the attacker to create valid session cookies. These session-cookies created by the attacker are not sufficient to obtain a valid session on the device.

Published: 2023-08-09 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-37857 is rated Low Risk (27.8/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.44%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-37857

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.06% 0.44% +0.38%
2 2025-11-21 0.20% 0.06% -0.14%
3 2025-11-18 — 0.20% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-37857

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
3.8 3.1 LOW
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 1.2 2.5 [email protected]
7.2 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.2 5.9 [email protected]

Weakness enumeration for CVE-2023-37857

Affected software / configurations for CVE-2023-37857

Vendor Product Version Raw CPE
phoenixcontact wp_6070-wvps_firmware < 4.0.10 cpe:2.3:o:phoenixcontact:wp_6070-wvps_firmware:*:*:*:*:*:*:*:*
phoenixcontact wp_6101-wxps_firmware < 4.0.10 cpe:2.3:o:phoenixcontact:wp_6101-wxps_firmware:*:*:*:*:*:*:*:*
phoenixcontact wp_6121-wxps_firmware < 4.0.10 cpe:2.3:o:phoenixcontact:wp_6121-wxps_firmware:*:*:*:*:*:*:*:*
phoenixcontact wp_6156-whps_firmware < 4.0.10 cpe:2.3:o:phoenixcontact:wp_6156-whps_firmware:*:*:*:*:*:*:*:*
phoenixcontact wp_6185-whps_firmware < 4.0.10 cpe:2.3:o:phoenixcontact:wp_6185-whps_firmware:*:*:*:*:*:*:*:*
phoenixcontact wp_6215-whps_firmware < 4.0.10 cpe:2.3:o:phoenixcontact:wp_6215-whps_firmware:*:*:*:*:*:*:*:*

References for CVE-2023-37857

URL Tags
https://cert.vde.com/en/advisories/VDE-2023-018/ Third Party Advisory
cvelogic Threat Intelligence