7.8

CVE-2021-40363: siemens simatic_pcs_7

CVSS: 7.8v3.1HighModified
Published 09-02-2022Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2021-40363 is a high (CVSS 7.8) vulnerability in siemens simatic_pcs_7. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 4.6% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
0.16%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 09-02-2022
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

A vulnerability has been identified in SIMATIC PCS 7 V8.2 (All versions), SIMATIC PCS 7 V9.0 (All versions), SIMATIC PCS 7 V9.1 (All versions < V9.1 SP1), SIMATIC WinCC V15 and earlier (All versions < V15 SP1 Update 7), SIMATIC WinCC V16 (All versions < V16 Update 5), SIMATIC WinCC V17 (All versions < V17 Update 2), SIMATIC WinCC V17 (All versions <= V17 Update 4), SIMATIC WinCC V7.4 (All versions < V7.4 SP1 Update 19), SIMATIC WinCC V7.5 (All versions < V7.5 SP2 Update 6). The affected component stores the credentials of a local system account in a potentially publicly accessible project file using an outdated cipher algorithm. An attacker may use this to brute force the credentials and take over the system.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

0.00 pp

From 0.16% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.16%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Siemens10 products
  • simatic_pcs_7≤ 8.2 | 9.0 | 9.1
  • simatic pcs 7 v8.2All versions (No fix recorded)
  • simatic pcs 7 v9.0All versions (No fix recorded)
  • simatic pcs 7 v9.1All versions < V9.1 SP1
  • simatic_wincc< 7.4 | 7.4 | 7.4:sp1 | 7.4:sp1_update1 | 7.4:sp1_update10 | 7.4:sp1_update11 | 7.4:sp1_update12 | 7.4:sp1_update13 | 7.4:sp1_update14 | 7.4:sp1_update15 | 7.4:sp1_update16 | 7.4:sp1_update17 | 7.4:sp1_update18 | 7.4:sp1_update2 | 7.4:sp1_update3 | 7.4:sp1_update4 | 7.4:sp1_update5 | 7.4:sp1_update6 | 7.4:sp1_update7 | 7.4:sp1_update8 | 7.4:sp1_update9 | 7.4:update_1 | 7.5 | 7.5:sp1 | 7.5:sp1_update1 | 7.5:sp1_update2 | 7.5:sp2 | 7.5:sp2_update1 | 7.5:sp2_update2 | 7.5:sp2_update3 | 7.5:sp2_update4 | 7.5:sp2_update5 | 13 | 13:sp1 | 13:sp2 | 14.0.1 | 15 | 15.1 | 15.1:update_1 | 15.1:update_2 | 15.1:update_3 | 15.1:update_4 | 15.1:update_5 | 15.1:update_6 | 16 | 16:update1 | 16:update2 | 16:update3 | 16:update4 | 17 | 17:update1

1 vendor · 10 products

References

1 links