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Full vulnerability report · 2023
CVE-2023-29499High confidence

Gvariant offset table entry size is not checked in is_normal()

n/a · glib2

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-398330 · CSAF 2.0 · revision 18 · interimSiemens ProductCERTSSA-398330: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP >= V3.1.0 and < V3.1.5
5 known affected

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

  • SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)
  • SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)
  • SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)
  • SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)
  • SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)
Summary
A flaw was found in GLib. GVariant deserialization fails to validate that the input conforms to the expected format, leading to denial of service.
Remediation
Update to V3.1.5 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-2023-33066

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

A flaw was found in GLib. GVariant deserialization fails to validate that the input conforms to the expected format, leading to denial of service.

What

A flaw was found in GLib. GVariant deserialization fails to validate that the input conforms to the expected format, leading to denial of service.

Why

The product does not properly control the allocation and maintenance of a limited resource.

How

An attacker operating through local access may attempt exploitation without authentication after a user interaction. If successful, the issue may disrupt the affected service.

What

A flaw was found in GLib. GVariant deserialization fails to validate that the input conforms to the expected format, leading to denial of service.

Why

The product does not properly control the allocation and maintenance of a limited resource.

How

An attacker operating through local access may attempt exploitation without authentication after a user interaction. 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 → Uncontrolled Resource Consumption → disrupt the affected service
Attack surface
Local
Privileges required
None: unauthenticated exploitation is possible
User interaction
Required interaction required
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-400 ↗

CWE-400: Uncontrolled Resource Consumption. The product does not properly control the allocation and maintenance of a limited resource.

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:N/UI:R/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.PRNonePrivileges required: The attacker does not need an account or existing privileges.UIRequiredUser interaction: Another user must perform an action for exploitation to succeed.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.
UnauthenticatedDenial of serviceCWE-400
A

Official authority intelligence

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

BSI · German · WID-SEC-W-2023-2917Xerox FreeFlow Print Server: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Xerox FreeFlow Print Server ausnutzen, um die Vertraulichkeit, Verfügbarkeit und Integrität des Systems zu gefährden.

Official advisory
BSI · German · WID-SEC-W-2023-2853Red Hat Enterprise Linux: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Red Hat Enterprise Linux ausnutzen, um einen Denial-of-Service-Zustand herbeizuführen, Sicherheitsmaßnahmen zu umgehen, seine Privilegien zu erweitern, vertrauliche Informationen offenzulegen oder beliebigen Code auszuführen.

Official advisory
BSI · German · WID-SEC-W-2024-1437Dell integrated Dell Remote Access Controller: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Dell integrated Dell Remote Access Controller ausnutzen, um einen Denial of Service Angriff oder einen nicht spezifizierten Angriff durchzuführen.

Official advisory
BSI · German · WID-SEC-W-2023-2825NetApp ActiveIQ Unified Manager: Schwachstelle ermöglicht Denial of Service

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in NetApp ActiveIQ Unified Manager ausnutzen, um einen Denial of Service Angriff durchzuführen.

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0218Multiples vulnérabilités dans les produits VMware

ord?id=CVE-2023-28319 Référence CVE CVE-2023-28320 https://www.cve.org/CVERecord?id=CVE-2023-28320 Référence CVE CVE-2023-28321 https://www.cve.org/CVERecord?id=CVE-2023-28321 Référence CVE CVE-2023-28322 https://www.cve.org/CVERecord?id=CVE-2023-28322 Référence CVE CVE-2023-28484 https://www.cve.org/CVERecord?id=CVE-2023-28484 Référence CVE CVE-2023-2908 https://www.cve.org/CVERecord?id=CVE-2023-2908 Référence CVE CVE-2023-29383 https://www.cve.org/CVERecord?id=CVE-2023-29383 Référence CVE CVE-2023-29469 https://www.cve.org/CVERecord?id=CVE-2023-29469 Référence CVE CVE-2023-29491 https://www.cve.org/CVERecord?id=CVE-2023-29491 Référence CVE CVE-2023-29499 https://www.cve.org/CVERecord?id=CVE-2023-29499 Référence CVE CVE-2023-2953 https://www.cve.org/CVERecord?id=CVE-2023-2953 Référence CVE CVE-2023-30086 https://www.cve.org/CVERecord?id=CVE-2023-30086 Référence CVE CVE-2023-30571 https://www.cve.org/CVERecord?id=CVE-2023-30571 Référence CVE CVE-2023-30774 https://www.cve.org/CVERecord?id=CVE-2023-30774 Référence CVE CVE-2023-30775 https://www.cve.org/CVERecord?id=CVE-2023-30775 Référence CVE CVE-2023-31484 https://www.cve.org/CVERecord?id=CVE-2023-31484 Référence CVE CVE-2023-31486 https://www.cve.org/CVERecord?id=CVE-2023-31486 Référence CVE CVE-2023-3164 https://www.cve.org/CVERecord?id=CVE

Official advisory
CERT-FR · French · CERTFR-2025-AVI-0969Multiples vulnérabilités dans les produits VMware

d?id=CVE-2023-29400 Référence CVE CVE-2023-29402 https://www.cve.org/CVERecord?id=CVE-2023-29402 Référence CVE CVE-2023-29403 https://www.cve.org/CVERecord?id=CVE-2023-29403 Référence CVE CVE-2023-29404 https://www.cve.org/CVERecord?id=CVE-2023-29404 Référence CVE CVE-2023-29405 https://www.cve.org/CVERecord?id=CVE-2023-29405 Référence CVE CVE-2023-29406 https://www.cve.org/CVERecord?id=CVE-2023-29406 Référence CVE CVE-2023-29409 https://www.cve.org/CVERecord?id=CVE-2023-29409 Référence CVE CVE-2023-29469 https://www.cve.org/CVERecord?id=CVE-2023-29469 Référence CVE CVE-2023-29491 https://www.cve.org/CVERecord?id=CVE-2023-29491 Référence CVE CVE-2023-29499 https://www.cve.org/CVERecord?id=CVE-2023-29499 Référence CVE CVE-2023-2975 https://www.cve.org/CVERecord?id=CVE-2023-2975 Référence CVE CVE-2023-2976 https://www.cve.org/CVERecord?id=CVE-2023-2976 Référence CVE CVE-2023-30086 https://www.cve.org/CVERecord?id=CVE-2023-30086 Référence CVE CVE-2023-30571 https://www.cve.org/CVERecord?id=CVE-2023-30571 Référence CVE CVE-2023-30774 https://www.cve.org/CVERecord?id=CVE-2023-30774 Référence CVE CVE-2023-31437 https://www.cve.org/CVERecord?id=CVE-2023-31437 Référence CVE CVE-2023-31438 https://www.cve.org/CVERecord?id=CVE-2023-31438 Référence CVE CVE-2023-31439 https://www.cve.org/CVERecord?id=CVE-

Official advisory
CERT-FR · French · CERTFR-2025-AVI-0939Multiples vulnérabilités dans les produits Splunk

cumentation). Documentation Bulletin de sécurité Splunk SVD-2025-1008 du 29 octobre 2025 https://advisory.splunk.com/advisories/SVD-2025-1008 Bulletin de sécurité Splunk SVD-2025-1009 du 29 octobre 2025 https://advisory.splunk.com/advisories/SVD-2025-1009 Bulletin de sécurité Splunk SVD-2025-1010 du 29 octobre 2025 https://advisory.splunk.com/advisories/SVD-2025-1010 Bulletin de sécurité Splunk SVD-2025-1011 du 29 octobre 2025 https://advisory.splunk.com/advisories/SVD-2025-1011 Référence CVE CVE-2022-3358 https://www.cve.org/CVERecord?id=CVE-2022-3358 Référence CVE CVE-2022-48622 https://www.cve.org/CVERecord?id=CVE-2022-48622 Référence CVE CVE-2023-29499 https://www.cve.org/CVERecord?id=CVE-2023-29499 Référence CVE CVE-2023-32611 https://www.cve.org/CVERecord?id=CVE-2023-32611 Référence CVE CVE-2023-32636 https://www.cve.org/CVERecord?id=CVE-2023-32636 Référence CVE CVE-2023-32665 https://www.cve.org/CVERecord?id=CVE-2023-32665 Référence CVE CVE-2024-34155 https://www.cve.org/CVERecord?id=CVE-2024-34155 Référence CVE CVE-2024-34156 https://www.cve.org/CVERecord?id=CVE-2024-34156 Référence CVE CVE-2024-34158 https://www.cve.org/CVERecord?id=CVE-2024-34158 Référence CVE CVE-2024-34397 https://www.cve.org/CVERecord?id=CVE-2024-34397 Référence CVE CVE-2024-45159 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2023-AVI-1015Multiples vulnérabilités dans les produits Siemens

d?id=CVE-2023-27536 Référence CVE CVE-2023-27537 https://www.cve.org/CVERecord?id=CVE-2023-27537 Référence CVE CVE-2023-27538 https://www.cve.org/CVERecord?id=CVE-2023-27538 Référence CVE CVE-2023-28484 https://www.cve.org/CVERecord?id=CVE-2023-28484 Référence CVE CVE-2023-28531 https://www.cve.org/CVERecord?id=CVE-2023-28531 Référence CVE CVE-2023-28831 https://www.cve.org/CVERecord?id=CVE-2023-28831 Référence CVE CVE-2023-29383 https://www.cve.org/CVERecord?id=CVE-2023-29383 Référence CVE CVE-2023-29469 https://www.cve.org/CVERecord?id=CVE-2023-29469 Référence CVE CVE-2023-29491 https://www.cve.org/CVERecord?id=CVE-2023-29491 Référence CVE CVE-2023-29499 https://www.cve.org/CVERecord?id=CVE-2023-29499 Référence CVE CVE-2023-2953 https://www.cve.org/CVERecord?id=CVE-2023-2953 Référence CVE CVE-2023-30901 https://www.cve.org/CVERecord?id=CVE-2023-30901 Référence CVE CVE-2023-31085 https://www.cve.org/CVERecord?id=CVE-2023-31085 Référence CVE CVE-2023-31238 https://www.cve.org/CVERecord?id=CVE-2023-31238 Référence CVE CVE-2023-3212 https://www.cve.org/CVERecord?id=CVE-2023-3212 Référence CVE CVE-2023-32611 https://www.cve.org/CVERecord?id=CVE-2023-32611 Référence CVE CVE-2023-32636 https://www.cve.org/CVERecord?id=CVE-2023-32636 Référence CVE CVE-2023-32643 https://www.cve.org/CVERecord?id=CVE-

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 S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0); SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0); SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0); SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0); SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
Update to V3.1.5 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 14 Sept 2023 · Last source change 18 Dec 2025, 15:23 UTC · CWE-400 · Uncontrolled Resource Consumption

CVE recordCVE.org · 5.2
CVSS sourceCNA
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-2023-33066
Product sourceVendor CSAF · Siemens ProductCERT
Remediation sourceVendor CSAF · Siemens ProductCERT
CWE sourceCNA
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
ENISA EUVD · EUVD-2023-33066↗Vendor CSAF · Siemens ProductCERT↗Vendor advisory↗CVE authority or vendor 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-2023-29499 · cve.blacktree.nl