CVE-2020-15787
CVE-2020-15787 is a critical-severity vulnerability in Siemens Simatic Hmi United Comfort Panels Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-305.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 5.0
- EPSS exploit prediction: 1% (71st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-305
- Affected product: Siemens Simatic Hmi United Comfort Panels Firmware
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2020-15787?
- 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.
- How severe is CVE-2020-15787?
- CVE-2020-15787 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-15787 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-15787?
- CVE-2020-15787 affects Siemens Simatic Hmi United Comfort Panels Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-15787?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2020-15787 published?
- CVE-2020-15787 was published on 2020-09-09 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:siemens:simatic_hmi_united_comfort_panels_firmware:*:*:*:*:*:*:*:*
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- CVE-2020-15786 — Critical (CVSS 9.8): A vulnerability has been identified in SIMATIC HMI Basic Panels 2nd Generation (incl. SIPLUS variants) (All versions <…
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