8.3

CVE-2014-2251: siemens simatic_s7-1500_cpu_firmware

CVSS: 8.3v2.0HighModified
Published 16-03-2014Last modified 06-08-2024
Open JSON

Vulnerability summary

CVE-2014-2251 is a high (CVSS 8.3) vulnerability in siemens simatic_s7-1500_cpu_firmware. EPSS estimates a 2.74% chance of exploitation in the next 30 days, higher than 85.9% of scored vulnerabilities.

Overall risk
34/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.3/10
010
High · v2.0 (NVD)
EPSS score
2.74%
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. 16-03-2014
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

The random-number generator on Siemens SIMATIC S7-1500 CPU PLC devices with firmware before 1.5.0 does not have sufficient entropy, which makes it easier for remote attackers to defeat cryptographic protection mechanisms and hijack sessions via unspecified vectors.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

2.74%

Chance of exploitation in the next 30 days

Percentile

86%

Versus all other CVEs

30-day change

0.00 pp

From 2.74% on 18-09-2026

18-09-202618-10-2026
EPSS score
2.74%

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

No weakness data has been published for this record.

Affected systems

Siemens1 product

1 vendor · 1 product

References

3 links