HOMEVULNERABILITIESCVE-2020-15798
CRITICAL

CVE-2020-15798

CWE-306Published: February 9, 2021· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

A vulnerability has been identified in SIMATIC HMI Comfort Panels (incl. SIPLUS variants) (All versions < V16 Update 3a), SIMATIC HMI KTP Mobile Panels (All versions < V16 Update 3a), SINAMICS GH150 (All versions), SINAMICS GL150 (with option X30) (All versions), SINAMICS GM150 (with option X30) (All versions), SINAMICS SH150 (All versions), SINAMICS SL150 (All versions), SINAMICS SM120 (All versions), SINAMICS SM150 (All versions), SINAMICS SM150i (All versions). Affected devices with enabled telnet service do not require authentication for this service. This could allow a remote attacker to gain full access to the device. (ZDI-CAN-12046)

NVD Source

Technical Analysis

CVE-2020-15798 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

siemens20 product(s)
simatic hmi comfort panels firmwaresimatic hmi comfort panelssimatic hmi ktp mobile panels firmwaresimatic hmi ktp mobile panelssinamics gh150 firmwaresinamics gh150sinamics gl150 firmwaresinamics gl150sinamics gm150 firmwaresinamics gm150sinamics sh150 firmwaresinamics sh150+8
Source: NVD CPE · 22 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://cert-portal.siemens.com/productcert/pdf/ssa-752103.pdf
PATCHhttps://cert-portal.siemens.com/productcert/pdf/ssa-752103.pdf
ADVISORYhttps://cert-portal.siemens.com/productcert/pdf/ssa-520004.pdf
ADVISORYhttps://us-cert.cisa.gov/ics/advisories/icsa-21-033-02
ADVISORYhttps://cert-portal.siemens.com/productcert/pdf/ssa-520004.pdf
ADVISORYhttps://us-cert.cisa.gov/ics/advisories/icsa-21-033-02

All References (6)

→
https://cert-portal.siemens.com/productcert/pdf/ssa-520004.pdfVendor Advisory
→
https://cert-portal.siemens.com/productcert/pdf/ssa-752103.pdfPatch · Vendor Advisory
→
https://us-cert.cisa.gov/ics/advisories/icsa-21-033-02Third Party Advisory · US Government Resource
→
https://cert-portal.siemens.com/productcert/pdf/ssa-520004.pdfVendor Advisory
→
https://cert-portal.siemens.com/productcert/pdf/ssa-752103.pdfPatch · Vendor Advisory
→
https://us-cert.cisa.gov/ics/advisories/icsa-21-033-02Third Party Advisory · US Government Resource

Quick Facts

CVE IDCVE-2020-15798
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-306
CISA KEVNo
Affected1 vendor(s)
PublishedFeb 9, 2021

Related CVEs (CWE-306)

CVE-2025-36535
10.0
CVE-2024-48966
10.0
CVE-2026-56163
10.0
CVE-2023-41918
10.0
CVE-2014-9195
10.0
CVE-2024-56799
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-15798 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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