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Full vulnerability report · 2021
CVE-2020-24486High confidence

Improper input validation in the firmware for some Intel(R) Processors may allow an authenticated user to potentially enable denial of service via local access

n/a · Intel(R) Processors

5.5MediumCVSS 3.1
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
SSA-309571 · CSAF 2.0 · revision 11 · finalSiemens ProductCERTSSA-309571: IPU 2021.1 Vulnerabilities in Siemens Industrial Products using Intel CPUs (June 2021)
8 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • SIMATIC IPC3000 SMART V3
  • SIMATIC IPC347G
  • SIMATIC IPC547G
  • SINUMERIK 828D HW PU.4
  • SINUMERIK MC MCU 1720
  • SINUMERIK ONE / SINUMERIK 840D sl Handheld Terminal HT 10
  • SINUMERIK ONE NCU 1740
  • SINUMERIK ONE PPU 1740
Summary
Improper input validation in the firmware for some Intel(R) Processors may allow an authenticated user to potentially enable denial of service via local access.
Remediation
Update BIOS to V01.04.00 or later version
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2020-17206

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
01

What, why and how

Improper input validation in the firmware for some Intel(R) Processors may allow an authenticated user to potentially enable denial of service via local access.

What

Improper input validation in the firmware for some Intel(R) Processors may allow an authenticated user to potentially enable denial of service via local access.

Why

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may disrupt the affected service.

What

Improper input validation in the firmware for some Intel(R) Processors may allow an authenticated user to potentially enable denial of service via local access.

Why

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may disrupt the affected service.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
local access → Improper Input Validation → disrupt the affected service
Attack surface
Local
Privileges required
Low: a basic authenticated account is required
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-20 ↗

CWE-20: Improper Input Validation. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
Denial of serviceCWE-20
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

BSI · German · WID-SEC-W-2024-1463Intel Prozessoren: Mehrere Schwachstellen

Ein lokaler Angreifer kann mehrere Schwachstellen in verschiedenen Intel Prozessoren ausnutzen, um seine Privilegien zu erhöhen, Informationen offenzulegen oder einen Denial of Service Zustand herbeizuführen.

Official advisory
CERT-FR · French · CERTFR-2022-AVI-124Multiples vulnérabilités dans les produits Siemens

ERecord?id=CVE-2019-19301 Référence CVE CVE-2019-6568 https://www.cve.org/CVERecord?id=CVE-2019-6568 Référence CVE CVE-2019-6575 https://www.cve.org/CVERecord?id=CVE-2019-6575 Référence CVE CVE-2019-8460 https://www.cve.org/CVERecord?id=CVE-2019-8460 Référence CVE CVE-2020-12357 https://www.cve.org/CVERecord?id=CVE-2020-12357 Référence CVE CVE-2020-12358 https://www.cve.org/CVERecord?id=CVE-2020-12358 Référence CVE CVE-2020-12360 https://www.cve.org/CVERecord?id=CVE-2020-12360 Référence CVE CVE-2020-13987 https://www.cve.org/CVERecord?id=CVE-2020-13987 Référence CVE CVE-2020-17437 https://www.cve.org/CVERecord?id=CVE-2020-17437 Référence CVE CVE-2020-24486 https://www.cve.org/CVERecord?id=CVE-2020-24486 Référence CVE CVE-2020-24506 https://www.cve.org/CVERecord?id=CVE-2020-24506 Référence CVE CVE-2020-24507 https://www.cve.org/CVERecord?id=CVE-2020-24507 Référence CVE CVE-2020-24511 https://www.cve.org/CVERecord?id=CVE-2020-24511 Référence CVE CVE-2020-24512 https://www.cve.org/CVERecord?id=CVE-2020-24512 Référence CVE CVE-2020-24513 https://www.cve.org/CVERecord?id=CVE-2020-24513 Référence CVE CVE-2020-24588 https://www.cve.org/CVERecord?id=CVE-2020-24588 Référence CVE CVE-2020-26139 https://www.cve.org/CVERecord?id=CVE-2020-26139 Référence CVE CVE-2020-26140 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2021-AVI-608Multiples vulnérabilités dans les produits Siemens

ssa-830194 du 10 août 2021 https://cert-portal.siemens.com/productcert/pdf/ssa-830194.pdf Bulletin de sécurité Siemens ssa-865327 du 10 août 2021 https://cert-portal.siemens.com/productcert/pdf/ssa-865327.pdf Bulletin de sécurité Siemens ssa-938030 du 10 août 2021 https://cert-portal.siemens.com/productcert/pdf/ssa-938030.pdf Référence CVE CVE-2016-20009 https://www.cve.org/CVERecord?id=CVE-2016-20009 Référence CVE CVE-2020-12357 https://www.cve.org/CVERecord?id=CVE-2020-12357 Référence CVE CVE-2020-12358 https://www.cve.org/CVERecord?id=CVE-2020-12358 Référence CVE CVE-2020-12360 https://www.cve.org/CVERecord?id=CVE-2020-12360 Référence CVE CVE-2020-24486 https://www.cve.org/CVERecord?id=CVE-2020-24486 Référence CVE CVE-2020-24506 https://www.cve.org/CVERecord?id=CVE-2020-24506 Référence CVE CVE-2020-24507 https://www.cve.org/CVERecord?id=CVE-2020-24507 Référence CVE CVE-2020-24511 https://www.cve.org/CVERecord?id=CVE-2020-24511 Référence CVE CVE-2020-24512 https://www.cve.org/CVERecord?id=CVE-2020-24512 Référence CVE CVE-2020-24513 https://www.cve.org/CVERecord?id=CVE-2020-24513 Référence CVE CVE-2020-28397 https://www.cve.org/CVERecord?id=CVE-2020-28397 Référence CVE CVE-2020-8670 https://www.cve.org/CVERecord?id=CVE-2020-8670 Référence CVE CVE-2020-8703 https://www.cve.org/CVERecord?id=CVE

Official advisory
CERT-FR · French · CERTFR-2021-AVI-446Multiples vulnérabilités dans les produits Intel

d?id=CVE-2020-12296 Référence CVE CVE-2020-12357 https://www.cve.org/CVERecord?id=CVE-2020-12357 Référence CVE CVE-2020-12358 https://www.cve.org/CVERecord?id=CVE-2020-12358 Référence CVE CVE-2020-12359 https://www.cve.org/CVERecord?id=CVE-2020-12359 Référence CVE CVE-2020-12360 https://www.cve.org/CVERecord?id=CVE-2020-12360 Référence CVE CVE-2020-24473 https://www.cve.org/CVERecord?id=CVE-2020-24473 Référence CVE CVE-2020-24474 https://www.cve.org/CVERecord?id=CVE-2020-24474 Référence CVE CVE-2020-24475 https://www.cve.org/CVERecord?id=CVE-2020-24475 Référence CVE CVE-2020-24485 https://www.cve.org/CVERecord?id=CVE-2020-24485 Référence CVE CVE-2020-24486 https://www.cve.org/CVERecord?id=CVE-2020-24486 Référence CVE CVE-2020-24506 https://www.cve.org/CVERecord?id=CVE-2020-24506 Référence CVE CVE-2020-24507 https://www.cve.org/CVERecord?id=CVE-2020-24507 Référence CVE CVE-2020-24509 https://www.cve.org/CVERecord?id=CVE-2020-24509 Référence CVE CVE-2020-24511 https://www.cve.org/CVERecord?id=CVE-2020-24511 Référence CVE CVE-2020-24512 https://www.cve.org/CVERecord?id=CVE-2020-24512 Référence CVE CVE-2020-24513 https://www.cve.org/CVERecord?id=CVE-2020-24513 Référence CVE CVE-2020-24514 https://www.cve.org/CVERecord?id=CVE-2020-24514 Référence CVE CVE-2020-24515 https://www.cve.org/CVERecord?id=

Official advisory
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
SIMATIC IPC3000 SMART V3; SIMATIC IPC347G; SIMATIC IPC547G; SINUMERIK 828D HW PU.4; SINUMERIK MC MCU 1720; SINUMERIK ONE / SINUMERIK 840D sl Handheld Terminal HT 10; SINUMERIK ONE NCU 1740; SINUMERIK ONE PPU 1740
Fixed
An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
Action
Update BIOS to V01.04.00 or later version
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 9 Jun 2021 · Last source change 4 Aug 2024, 15:12 UTC · CWE-20 · Improper Input Validation

CVE recordCVE.org · 5.1
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2020-17206
Product sourceVendor CSAF · Siemens ProductCERT
Remediation sourceVendor CSAF · Siemens ProductCERT
CWE sourceNIST NVD
NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates →

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2020-17206↗Vendor CSAF · Siemens ProductCERT↗CVE authority or vendor reference↗Patch or update reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2020-24486 · cve.blacktree.nl