8.1

CVE-2022-40226: siemens 7kg8500-0aa00-0aa0_firmware Session Fixation

CVSS: 8.1v3.1HighModified
Published 11-10-2022Last modified 09-12-2025
Open JSON

Vulnerability summary

CVE-2022-40226 is a high (CVSS 8.1) Session Fixation vulnerability in siemens 7kg8500-0aa00-0aa0_firmware. EPSS estimates a 0.81% chance of exploitation in the next 30 days, higher than 56.1% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.1/10
010
High · v3.1 (NVD)
EPSS score
0.81%
0%100%
Low · +0.11 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 11-10-2022
    PublishedVulnerability first disclosed.
  2. 09-12-2025
    Last modifiedVulnerability information updated.

Description

A vulnerability has been identified in SICAM P850 (7KG8500-0AA00-0AA0) (All versions < V3.10), SICAM P850 (7KG8500-0AA00-2AA0) (All versions < V3.10), SICAM P850 (7KG8500-0AA10-0AA0) (All versions < V3.10), SICAM P850 (7KG8500-0AA10-2AA0) (All versions < V3.10), SICAM P850 (7KG8500-0AA30-0AA0) (All versions < V3.10), SICAM P850 (7KG8500-0AA30-2AA0) (All versions < V3.10), SICAM P850 (7KG8501-0AA01-0AA0) (All versions < V3.10), SICAM P850 (7KG8501-0AA01-2AA0) (All versions < V3.10), SICAM P850 (7KG8501-0AA02-0AA0) (All versions < V3.10), SICAM P850 (7KG8501-0AA02-2AA0) (All versions < V3.10), SICAM P850 (7KG8501-0AA11-0AA0) (All versions < V3.10), SICAM P850 (7KG8501-0AA11-2AA0) (All versions < V3.10), SICAM P850 (7KG8501-0AA12-0AA0) (All versions < V3.10), SICAM P850 (7KG8501-0AA12-2AA0) (All versions < V3.10), SICAM P850 (7KG8501-0AA31-0AA0) (All versions < V3.10), SICAM P850 (7KG8501-0AA31-2AA0) (All versions < V3.10), SICAM P850 (7KG8501-0AA32-0AA0) (All versions < V3.10), SICAM P850 (7KG8501-0AA32-2AA0) (All versions < V3.10), SICAM P855 (7KG8550-0AA00-0AA0) (All versions < V3.10), SICAM P855 (7KG8550-0AA00-2AA0) (All versions < V3.10), SICAM P855 (7KG8550-0AA10-0AA0) (All versions < V3.10), SICAM P855 (7KG8550-0AA10-2AA0) (All versions < V3.10), SICAM P855 (7KG8550-0AA30-0AA0) (All versions < V3.10), SICAM P855 (7KG8550-0AA30-2AA0) (All versions < V3.10), SICAM P855 (7KG8551-0AA01-0AA0) (All versions < V3.10), SICAM P855 (7KG8551-0AA01-2AA0) (All versions < V3.10), SICAM P855 (7KG8551-0AA02-0AA0) (All versions < V3.10), SICAM P855 (7KG8551-0AA02-2AA0) (All versions < V3.10), SICAM P855 (7KG8551-0AA11-0AA0) (All versions < V3.10), SICAM P855 (7KG8551-0AA11-2AA0) (All versions < V3.10), SICAM P855 (7KG8551-0AA12-0AA0) (All versions < V3.10), SICAM P855 (7KG8551-0AA12-2AA0) (All versions < V3.10), SICAM P855 (7KG8551-0AA31-0AA0) (All versions < V3.10), SICAM P855 (7KG8551-0AA31-2AA0) (All versions < V3.10), SICAM P855 (7KG8551-0AA32-0AA0) (All versions < V3.10), SICAM P855 (7KG8551-0AA32-2AA0) (All versions < V3.10), SICAM T (All versions < V3.0). Affected devices accept user defined session cookies and do not renew the session cookie after login/logout. This could allow an attacker to take over another user's session after login.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.81%

Chance of exploitation in the next 30 days

Percentile

56%

Versus all other CVEs

30-day change

+0.11 pp

From 0.70% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.81%

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

Siemens39 products

1 vendor · 39 products

References

3 links