CVE-2020-12521: phoenix contact axc f 1152 (1151412) Improper Input Validation
CVSS: 6.5v3.1MediumModified
Published 17-12-2020Last modified 17-09-2024
Vulnerability summary
CVE-2020-12521 is a medium (CVSS 6.5) Improper Input Validation vulnerability in phoenix contact axc f 1152 (1151412). EPSS estimates a 0.46% chance of exploitation in the next 30 days, higher than 38.4% of scored vulnerabilities.
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)EPSS score
0.46%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 17-12-2020PublishedVulnerability first disclosed.
- 17-09-2024Last modifiedVulnerability information updated.
Description
On Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS a specially crafted LLDP packet may lead to a high system load in the PROFINET stack. An attacker can cause failure of system services or a complete reboot.
CVSS metrics
3 scores · 2 sources · 2 versionsMedium 6.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 2 agree
- NVDNIST6.5MediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Medium 6.1Preferred score · NVD (NIST)
AV:A/AC:L/Au:N/C:N/I:N/A:CSourcesSingle source
EPSS trend
Probability
0.46%
Chance of exploitation in the next 30 days
Percentile
38%
Versus all other CVEs
30-day change
0.00 pp
From 0.46% on 20-09-2026
20-09-202620-10-2026
EPSS score0.46%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Phoenix contact6 products
- axc f 1152 (1151412)≥ unspecified, < 2021.0 LTS
- axc f 2152 (2404267)≥ unspecified, < 2021.0 LTS
- axc f 2152 starterkit (1046568)≥ unspecified, < 2021.0 LTS
- axc f 3152 (1069208)≥ unspecified, < 2021.0 LTS
- plcnext technology starterkit (1188165)≥ unspecified, < 2021.0 LTS
Phoenixcontact1 product
- plcnext_firmware< 2021.0
2 vendors · 7 products