CVE-2020-15787: siemens simatic_hmi_unified_comfort_panels_firmware
Vulnerability summary
CVE-2020-15787 is a critical (CVSS 9.8) vulnerability in siemens simatic_hmi_unified_comfort_panels_firmware. EPSS estimates a 1.48% chance of exploitation in the next 30 days, higher than 73.6% of scored vulnerabilities.
Timeline
- 09-09-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
A vulnerability has been identified in SIMATIC HMI Unified Comfort Panels (All versions <= V16). Affected devices insufficiently validate authentication attempts as the information given can be truncated to match only a set number of characters versus the whole provided string. This could allow a remote attacker to discover user passwords and obtain access to the Sm@rt Server via a brute-force attack.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
1.48%
Chance of exploitation in the next 30 days
Percentile
74%
Versus all other CVEs
30-day change
0.00 pp
From 1.48% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-305Authentication Bypass by Primary WeaknessThe authentication algorithm is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error.
- CWE-287Improper AuthenticationWhen an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
Affected systems
Siemens1 product
- simatic_hmi_unified_comfort_panels_firmwareAll versions <= V16
1 vendor · 1 product