Cyber Resilience

CVE-2020-15800

Critical

Published: 12 January 2021

Published
12 January 2021
Modified
21 November 2024
KEV Added
Patch
CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0068 72.1th percentile
Risk Priority 20 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2020-15800 is a critical-severity Heap-based Buffer Overflow (CWE-122) vulnerability in Siemens Scalance X200-4Pirt Firmware. Its CVSS base score is 9.8 (Critical).

Operationally, ranked in the top 27.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

A vulnerability has been identified in SCALANCE X-200 switch family (incl. SIPLUS NET variants) (All versions < V5.2.5), SCALANCE X-200IRT switch family (incl. SIPLUS NET variants) (All versions < V5.5.0), SCALANCE X-300 switch family (incl. X408 and SIPLUS NET variants)…

more

(All versions < V4.1.0). The webserver of the affected devices contains a vulnerability that may lead to a heap overflow condition. An attacker could cause this condition on the webserver by sending specially crafted requests. This could stop the webserver temporarily.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

siemens
scalance x200-4pirt firmware
≤ 5.5.0
siemens
scalance x201-3pirt firmware
≤ 5.5.0
siemens
scalance x202-2irt firmware
≤ 5.5.0
siemens
scalance x202-2pirt firmware
≤ 5.5.0
siemens
scalance x202-2pirt siplus net firmware
≤ 5.5.0
siemens
scalance x204irt firmware
≤ 5.5.0
siemens
scalance x307-3 firmware
all versions
siemens
scalance x307-3ld firmware
all versions
siemens
scalance x308-2 firmware
all versions
siemens
scalance x308-2ld firmware
all versions
+56 more product configuration(s) — see NVD for full list

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-787

Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.

References