7.8

CVE-2021-34570: phoenix contact axc f Improper Input Validation

CVSS: 7.8v2.0HighModified
Published 27-09-2021Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2021-34570 is a high (CVSS 7.8) Improper Input Validation vulnerability in phoenix contact axc f. EPSS estimates a 0.98% chance of exploitation in the next 30 days, higher than 61.5% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v2.0 (NVD)
EPSS score
0.98%
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. 27-09-2021
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

Multiple Phoenix Contact PLCnext control devices in versions prior to 2021.0.5 LTS are prone to a DoS attack through special crafted JSON requests.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.98%

Chance of exploitation in the next 30 days

Percentile

62%

Versus all other CVEs

30-day change

0.00 pp

From 0.98% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.98%

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

Phoenixcontact6 products
Phoenix contact3 products
  • axc f≥ AXC F 1152 (1151412), < 2021.0.5 LTS | ≥ AXC F 2152 (2404267), < 2021.0.5 LTS | ≥ AXC F 3152 (1069208), < 2021.0.5 LTS | ≥ AXC F 2152 Starterkit (1046568), < 2021.0.5 LTS
  • plcnext≥ PLCnext Technology Starterkit (1188165), < 2021.0.5 LTS
  • rfc≥ RFC 4072S (1051328), < 2021.0.5 LTS

2 vendors · 9 products

References

1 links