CVE-2020-15783

high

Published 2020-11-12 · Modified 2026-06-02

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CVSS v3

7.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v4 NEW

—

not yet in upstream

VIR risk

7.5

Description

A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC TDC CPU555 (All versions), SINUMERIK 840D sl (All versions). Sending multiple specially crafted packets to the affected devices could cause a Denial-of-Service on port 102. A cold restart is required to recover the service.

Predictions

Exploit likelihood

83%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Application impact

Vendor	Product	Versions
siemens	sinumerik_840d_sl	`-`
siemens	simatic_s7-300_cpu_312	`-`
siemens	simatic_s7-300_cpu_314	`-`
siemens	simatic_s7-300_cpu_315-2_dp	`-`
siemens	simatic_s7-300_cpu_315-2_pn	`-`
siemens	simatic_s7-300_cpu_317-2_pn	`-`
siemens	simatic_s7-300_cpu_317-2_dp	`-`
siemens	simatic_s7-300_cpu_315f-2_dp	`-`
siemens	simatic_s7-300_cpu_315f-2_pn	`-`
siemens	simatic_s7-300_cpu_317f-2_pn	`-`
siemens	simatic_s7-300_cpu_317f-2_dp	`-`
siemens	simatic_tdc_cpu555	`-`

References

https://cert-portal.siemens.com/productcert/pdf/ssa-492828.pdf

CWEs

CWE-400

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.