CVE-2021-44695

highpriority · track · 0EPSS 0.008 · 55 %ileDEEUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.77% (55th) EPSS
CVSS 7.5 · high
Is it mine?
501 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · cert_bund · cisa_csaf_ot

EPSS · scored 2026-10-24

Affected devices don't process correctly certain special crafted packets sent to port 102/tcp, which could allow an attacker to cause a denial of service in the device.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

02

cvss

Technical severity, 0–10. One row per scoring source.

7.5
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.9–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · NVD / NIST USexploitability 3.9 · impact 3.6
v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:Csecondary · CISA US
v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:Csecondary · ENISA EU
v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:Hsecondary · productcert@siemens.com DEexploitability 1.2 · impact 3.6
v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:Csecondary · Siemens ProductCERT DE
03

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-1286USCWE-1286USCWE-1286USCWE-20US
05

affected products (501)

Products and version ranges known to be affected.

showing 20 of 501
06

advisories (3)

Vendor and ecosystem advisories describing this.

  • SSA-382653SSA-382653: Multiple Denial of Service Vulnerabilities in Industrial Products2022-12-13csaf · siemens_psirtDE

    Affected SIMATIC firmware contains multiple vulnerabilities that could allow an unauthenticated attacker to perform a denial of service attack under certain conditions. Siemens has released updates for the affected products and recommends to update to the latest versions.

  • WID-SEC-W-2022-2297Siemens SIMATIC S7: Mehrere Schwachstellen ermöglichen Denial of ServiceDeutsch2022-12-12csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in Siemens SIMATIC S7 ausnutzen, um einen Denial of Service Angriff durchzuführen.

  • ICSA-22-349-03Siemens Multiple Denial of Service Vulnerabilities in Industrial Products2022-12-13icsa · cisa_csaf_otUS

    Affected SIMATIC firmware contains multiple vulnerabilities that could allow an unauthenticated attacker to perform a denial of service attack under certain conditions. Siemens has released updates for the affected products and recommends to update to the latest versions.

07

also known as (3)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

cnnvdenisa_euvdcert_bundcisa_csaf_otsiemens_psirtNVDCVE.orgMITRE
published 2022-12-13modified 2026-06-17
09

references (6)

External citations — patches, advisories, analysis.

scry

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