CyberSecBulletin
CVE-2024-54015NVD status: Deferred

SIPROTEC 5 6MD84 (CP300): Use of Default Credentials

Published Updated By the CyberSecBulletin desk

CVE-2024-54015 is a high-severity use of default credentials vulnerability in SIPROTEC 5 6MD84 (CP300) from Siemens, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists version V9.90 as the first without the flaw, so updating SIPROTEC 5 6MD84 (CP300) to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.58% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update SIPROTEC 5 6MD84 (CP300) to V9.90 or a later version.
  2. Update SIPROTEC 5 6MD85 (CP300) to V9.90 or a later version.
  3. Update SIPROTEC 5 6MD86 (CP300) to V9.90 or a later version.
  4. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.

Affected products and versions

VendorProductAffected versionsFixed in
SiemensSIPROTEC 5 6MD84 (CP300)before V9.90V9.90
SiemensSIPROTEC 5 6MD85 (CP300)V8.80 up to, but not including, V9.90V9.90
SiemensSIPROTEC 5 6MD86 (CP300)V8.80 up to, but not including, V9.90V9.90
SiemensSIPROTEC 5 6MD89 (CP300)V8.80 up to, but not including, V9.90V9.90
SiemensSIPROTEC 5 6MD89 (CP300) V9.6xbefore V9.68V9.68
SiemensSIPROTEC 5 6MU85 (CP300)V8.80 up to, but not including, V9.90V9.90
SiemensSIPROTEC 5 7KE85 (CP300)V8.80 up to, but not including, V10.0V10.0
SiemensSIPROTEC 5 7SA82 (CP150)before V9.90V9.90
SiemensSIPROTEC 5 7SA86 (CP300)V8.80 up to, but not including, V9.90V9.90
SiemensSIPROTEC 5 7SA87 (CP300)V8.80 up to, but not including, V9.90V9.90
SiemensSIPROTEC 5 7SD82 (CP150)before V9.90V9.90
SiemensSIPROTEC 5 7SD86 (CP300)V8.80 up to, but not including, V9.90V9.90
SiemensSIPROTEC 5 7SD87 (CP300)V8.80 up to, but not including, V9.90V9.90
SiemensSIPROTEC 5 7SJ81 (CP150)before V9.90V9.90
SiemensSIPROTEC 5 7SJ82 (CP150)before V9.90V9.90
SiemensSIPROTEC 5 7SJ85 (CP300)V8.80 up to, but not including, V9.90V9.90
SiemensSIPROTEC 5 7SJ86 (CP300)V8.80 up to, but not including, V9.90V9.90
SiemensSIPROTEC 5 7SK82 (CP150)before V9.90V9.90
SiemensSIPROTEC 5 7SK85 (CP300)V8.80 up to, but not including, V9.90V9.90
SiemensSIPROTEC 5 7SL82 (CP150)before V9.90V9.90
SiemensSIPROTEC 5 7SL86 (CP300)V8.80 up to, but not including, V9.90V9.90
SiemensSIPROTEC 5 7SL87 (CP300)V8.80 up to, but not including, V9.90V9.90
SiemensSIPROTEC 5 7SS85 (CP300)V8.80 up to, but not including, V9.90V9.90
SiemensSIPROTEC 5 7ST85 (CP300)V8.80 up to, but not including, V10.0V10.0
SiemensSIPROTEC 5 7ST85 (CP300) V9.6xbefore V9.68V9.68

Version data comes from the organisation that assigned the CVE; 23 further products are omitted here. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
NoneNo account or login is needed.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
NoneNothing can be modified.
Availability
NoneAvailability is not affected.

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. Scored by CNA (siemens.com).

Scoring systemScoreSeverityScored by
CVSS 4.08.7HighCNA (siemens.com)
CVSS 3.17.5HighCNA (siemens.com)

Official description

A vulnerability has been identified in SIPROTEC 5 6MD84 (CP300) (All versions < V9.90), SIPROTEC 5 6MD85 (CP300) (All versions >= V8.80 < V9.90), SIPROTEC 5 6MD86 (CP300) (All versions >= V8.80 < V9.90), SIPROTEC 5 6MD89 (CP300) (All versions >= V8.80 < V9.90), SIPROTEC 5 6MD89 (CP300) V9.6x (All versions < V9.68), SIPROTEC 5 6MU85 (CP300) (All versions >= V8.80 < V9.90), SIPROTEC 5 7KE85 (CP300) (All versions >= V8.80 < V10.0), SIPROTEC 5 7SA82 (CP150) (All versions < V9.90), SIPROTEC 5 7SA86 (CP300) (All versions >= V8.80 < V9.90), SIPROTEC 5 7SA87 (CP300) (All versions >= V8.80 < V9.90), SIPROTEC 5 7SD82 (CP150) (All versions < V9.90), SIPROTEC 5 7SD86 (CP300) (All versions >= V8.80 < V9.90), SIPROTEC 5 7SD87 (CP300) (All versions >= V8.80 < V9.90), SIPROTEC 5 7SJ81 (CP150) (All versions < V9.90), SIPROTEC 5 7SJ82 (CP150) (All versions < V9.90), SIPROTEC 5 7SJ85 (CP300) (All versions >= V8.80 < V9.90), SIPROTEC 5 7SJ86 (CP300) (All versions >= V8.80 < V9.90), SIPROTEC 5 7SK82 (CP150) (All versions < V9.90), SIPROTEC 5 7SK85 (CP300) (All versions >= V8.80 < V9.90), SIPROTEC 5 7SL82 (CP150) (All versions < V9.90), SIPROTEC 5 7SL86 (CP300) (All versions >= V8.80 < V9.90), SIPROTEC 5 7SL87 (CP300) (All versions >= V8.80 < V9.90), SIPROTEC 5 7SS85 (CP300) (All versions >= V8.80 < V9.90), SIPROTEC 5 7ST85 (CP300) (All versions >= V8.80 < V10.0), SIPROTEC 5 7ST85 (CP300) V9.6x (All versions < V9.68), SIPROTEC 5 7ST86 (CP300) (All versions < V10.0), SIPROTEC 5 7ST86 (CP300) V9.8x (All versions < V9.83), SIPROTEC 5 7SX82 (CP150) (All versions < V9.90), SIPROTEC 5 7SX85 (CP300) (All versions >= V8.80 < V9.90), SIPROTEC 5 7SY82 (CP150) (All versions < V9.90), SIPROTEC 5 7UM85 (CP300) (All versions >= V8.80 < V9.90), SIPROTEC 5 7UT82 (CP150) (All versions < V9.90), SIPROTEC 5 7UT85 (CP300) (All versions >= V8.80 < V9.90), SIPROTEC 5 7UT86 (CP300) (All versions >= V8.80 < V9.90), SIPROTEC 5 7UT87 (CP300) (All versions >= V8.80 < V9.90), SIPROTEC 5 7VE85 (CP300) (All versions >= V8.80 < V9.90), SIPROTEC 5 7VK87 (CP300) (All versions >= V8.80 < V9.90), SIPROTEC 5 7VU85 (CP300) (All versions < V9.90), SIPROTEC 5 Communication Module ETH-BA-2EL (Rev.2) (All versions < V9.90), SIPROTEC 5 Communication Module ETH-BA-2EL (Rev.2) V9.6 (All versions < V9.68), SIPROTEC 5 Communication Module ETH-BA-2EL (Rev.2) V9.8 (All versions < V9.83), SIPROTEC 5 Communication Module ETH-BB-2FO (Rev. 2) (All versions < V9.90), SIPROTEC 5 Communication Module ETH-BB-2FO (Rev. 2) V9.6 (All versions < V9.68), SIPROTEC 5 Communication Module ETH-BB-2FO (Rev. 2) V9.8 (All versions < V9.83), SIPROTEC 5 Communication Module ETH-BD-2FO (All versions >= V8.80 < V9.90), SIPROTEC 5 Communication Module ETH-BD-2FO V9.6 (All versions < V9.68), SIPROTEC 5 Communication Module ETH-BD-2FO V9.8 (All versions < V9.83), SIPROTEC 5 Compact 7SX800 (CP050) (All versions >= V9.50 < V9.90). Affected devices do not properly validate SNMP GET requests. This could allow an unauthenticated, remote attacker to retrieve sensitive information of the affected devices with SNMPv2 GET requests using default credentials.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Use of Default Credentials

The product uses default credentials (such as passwords or cryptographic keys) for potentially critical functionality.

How developers prevent this class of flaw

  • Prohibit use of default, hard-coded, or other values that do not vary for each installation of the product - especially for separate organizations.
  • Force the administrator to change the credential upon installation.
  • The product administrator could change the defaults upon installation or during operation.

More Use of Default Credentials vulnerabilities (CWE-1392)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: partial).
  3. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in SIPROTEC 5 6MD84 (CP300)

All SIPROTEC 5 6MD84 (CP300) vulnerabilities

Recent Use of Default Credentials vulnerabilities

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