9.3

CVE-2011-4508: siemens simatic_hmi_panels Improper Authentication

CVSS: 9.3v2.0HighModified
Published 03-02-2012Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2011-4508 is a high (CVSS 9.3) Improper Authentication vulnerability in siemens simatic_hmi_panels. EPSS estimates a 2.98% chance of exploitation in the next 30 days, higher than 87% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.3/10
010
High · v2.0 (NVD)
EPSS score
2.98%
0%100%
Low · -0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 03-02-2012
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

The HMI web server in Siemens WinCC flexible 2004, 2005, 2007, and 2008 before SP3; WinCC V11 (aka TIA portal) before SP2 Update 1; the TP, OP, MP, Comfort Panels, and Mobile Panels SIMATIC HMI panels; WinCC V11 Runtime Advanced; and WinCC flexible Runtime generates predictable authentication tokens for cookies, which makes it easier for remote attackers to bypass authentication via a crafted cookie.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

2.98%

Chance of exploitation in the next 30 days

Percentile

87%

Versus all other CVEs

30-day change

-0.01 pp

From 2.99% on 18-09-2026

18-09-202618-10-2026
EPSS score
2.98%

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

Siemens4 products

1 vendor · 4 products

References

2 links