BlackTreeIndependent security intelligence
← Back to the CVE catalogue
Full vulnerability report · 2022
CVE-2022-44792High confidence

n/a — NULL Pointer Dereference

n/a · n/a

6.5MediumCVSS 3.1
Recommended action
Within 7 days

Medium technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

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.

2 current
SSA-625862 · CSAF 2.0 · revision 1 · interimSiemens ProductCERTSSA-625862: Multiple Vulnerabilities in Third-Party Components in SIMATIC CP 1542SP-1 and CP 1543SP-1 before V2.3
6 known affected

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

  • SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0)
  • SIMATIC CP 1542SP-1 IRC (6GK7542-6VX00-0XE0)
  • SIMATIC CP 1543SP-1 (6GK7543-6WX00-0XE0)
  • SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL (6AG2542-6VX00-4XE0)
  • SIPLUS ET 200SP CP 1543SP-1 ISEC (6AG1543-6WX00-7XE0)
  • SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL (6AG2543-6WX00-4XE0)
Summary
handle_ipDefaultTTL in agent/mibgroup/ip-mib/ip_scalars.c in Net-SNMP 5.8 through 5.9.3 has a NULL Pointer Exception bug that can be used by a remote attacker (who has write access) to cause the instance to crash via a crafted UDP packet, resulting in Denial of Service.
Remediation
Update to V2.3 or later version
SSA-099606 · CSAF 2.0 · revision 1 · interimSiemens ProductCERTSSA-099606: Multiple Vulnerabilities in SIMATIC MV500 before V3.3.5
1 known affected

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

  • SIMATIC MV500 family
Summary
handle_ipDefaultTTL in agent/mibgroup/ip-mib/ip_scalars.c in Net-SNMP 5.8 through 5.9.3 has a NULL Pointer Exception bug that can be used by a remote attacker (who has write access) to cause the instance to crash via a crafted UDP packet, resulting in Denial of Service.
Remediation
Update to V3.3.5 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-2022-47724

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 actionWithin 7 days

Medium technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Patch available
01

What, why and how

handle_ipDefaultTTL in agent/mibgroup/ip-mib/ip_scalars.c in Net-SNMP 5.8 through 5.9.3 has a NULL Pointer Exception bug that can be used by a remote attacker (who has write access) to cause the instance to crash via a crafted UDP packet, resulting in Denial of Service.

What

handle_ipDefaultTTL in agent/mibgroup/ip-mib/ip_scalars.c in Net-SNMP 5.8 through 5.9.3 has a NULL Pointer Exception bug that can be used by a remote attacker (who has write access) to cause the instance to crash via a crafted UDP packet, resulting in Denial of Service.

Why

The product dereferences a pointer that it expects to be valid but is NULL.

How

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

What

handle_ipDefaultTTL in agent/mibgroup/ip-mib/ip_scalars.c in Net-SNMP 5.8 through 5.9.3 has a NULL Pointer Exception bug that can be used by a remote attacker (who has write access) to cause the instance to crash via a crafted UDP packet, resulting in Denial of Service.

Why

The product dereferences a pointer that it expects to be valid but is NULL.

How

An attacker operating through a network path 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.
Reference recorded

A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.

Likely attack path
a network path → NULL Pointer Dereference → disrupt the affected service
Attack surface
Network
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-476 ↗

CWE-476: NULL Pointer Dereference. The product dereferences a pointer that it expects to be valid but is NULL.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/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.

AVNetworkAttack vector: The vulnerable component can be reached over a network.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
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedDenial of serviceCWE-476Public exploit reference
A

Official authority intelligence

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

BSI · German · WID-SEC-W-2023-2031Xerox 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-2023-1969HPE Fabric OS: Mehrere Schwachstellen ermöglichen Privilegieneskalation

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in HPE Fabric OS für HPE Fibre Channel und SAN Switches ausnutzen, um seine Privilegien zu erhöhen, Informationen offenzulegen oder einen Denial of Service Zustand herbeizuführen.

Official advisory
BSI · German · WID-SEC-W-2025-0225Dell PowerProtect Data Domain: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Dell PowerProtect Data Domain ausnutzen, um erhöhte Rechte zu erlangen, einen Denial-of-Service-Zustand herbeizuführen und einen nicht näher spezifizierten Angriff durchzuführen.

Official advisory
BSI · German · WID-SEC-W-2022-1970Net-SNMP: Schwachstelle ermöglicht Denial of Service

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Net-SNMP ausnutzen, um einen Denial of Service Angriff durchzuführen.

Official advisory
CERT-FR · French · CERTFR-2024-AVI-0478Multiples vulnérabilités dans les produits Siemens

ecord?id=CVE-2022-39189 Référence CVE CVE-2022-40225 https://www.cve.org/CVERecord?id=CVE-2022-40225 Référence CVE CVE-2022-40303 https://www.cve.org/CVERecord?id=CVE-2022-40303 Référence CVE CVE-2022-40304 https://www.cve.org/CVERecord?id=CVE-2022-40304 Référence CVE CVE-2022-41742 https://www.cve.org/CVERecord?id=CVE-2022-41742 Référence CVE CVE-2022-42328 https://www.cve.org/CVERecord?id=CVE-2022-42328 Référence CVE CVE-2022-42329 https://www.cve.org/CVERecord?id=CVE-2022-42329 Référence CVE CVE-2022-4304 https://www.cve.org/CVERecord?id=CVE-2022-4304 Référence CVE CVE-2022-4450 https://www.cve.org/CVERecord?id=CVE-2022-4450 Référence CVE CVE-2022-44792 https://www.cve.org/CVERecord?id=CVE-2022-44792 Référence CVE CVE-2022-44793 https://www.cve.org/CVERecord?id=CVE-2022-44793 Référence CVE CVE-2022-45886 https://www.cve.org/CVERecord?id=CVE-2022-45886 Référence CVE CVE-2022-45887 https://www.cve.org/CVERecord?id=CVE-2022-45887 Référence CVE CVE-2022-45919 https://www.cve.org/CVERecord?id=CVE-2022-45919 Référence CVE CVE-2022-46144 https://www.cve.org/CVERecord?id=CVE-2022-46144 Référence CVE CVE-2023-0160 https://www.cve.org/CVERecord?id=CVE-2023-0160 Référence CVE CVE-2023-0215 https://www.cve.org/CVERecord?id=CVE-2023-0215 Référence CVE CVE-2023-0286 https://www.cve.org/CVERecord?id=CVE-2

Official advisory
CERT-FR · French · CERTFR-2023-AVI-0935Multiples vulnérabilités dans les produits Siemens

ERecord?id=CVE-2022-28808 Référence CVE CVE-2022-28809 https://www.cve.org/CVERecord?id=CVE-2022-28809 Référence CVE CVE-2022-30184 https://www.cve.org/CVERecord?id=CVE-2022-30184 Référence CVE CVE-2022-37434 https://www.cve.org/CVERecord?id=CVE-2022-37434 Référence CVE CVE-2022-39158 https://www.cve.org/CVERecord?id=CVE-2022-39158 Référence CVE CVE-2022-41032 https://www.cve.org/CVERecord?id=CVE-2022-41032 Référence CVE CVE-2022-4203 https://www.cve.org/CVERecord?id=CVE-2022-4203 Référence CVE CVE-2022-4304 https://www.cve.org/CVERecord?id=CVE-2022-4304 Référence CVE CVE-2022-4450 https://www.cve.org/CVERecord?id=CVE-2022-4450 Référence CVE CVE-2022-44792 https://www.cve.org/CVERecord?id=CVE-2022-44792 Référence CVE CVE-2022-44793 https://www.cve.org/CVERecord?id=CVE-2022-44793 Référence CVE CVE-2022-47522 https://www.cve.org/CVERecord?id=CVE-2022-47522 Référence CVE CVE-2023-0216 https://www.cve.org/CVERecord?id=CVE-2023-0216 Référence CVE CVE-2023-0217 https://www.cve.org/CVERecord?id=CVE-2023-0217 Référence CVE CVE-2023-0401 https://www.cve.org/CVERecord?id=CVE-2023-0401 Référence CVE CVE-2023-0933 https://www.cve.org/CVERecord?id=CVE-2023-0933 Référence CVE CVE-2023-1530 https://www.cve.org/CVERecord?id=CVE-2023-1530 Référence CVE CVE-2023-21808 https://www.cve.org/CVERecord?id=CVE-2023-2

Official advisory
CERT-FR · French · CERTFR-2023-AVI-0318Multiples vulnérabilités dans les produits VMware

ecord?id=CVE-2022-24808 Référence CVE CVE-2022-24809 https://www.cve.org/CVERecord?id=CVE-2022-24809 Référence CVE CVE-2022-24810 https://www.cve.org/CVERecord?id=CVE-2022-24810 Référence CVE CVE-2022-2962 https://www.cve.org/CVERecord?id=CVE-2022-2962 Référence CVE CVE-2022-3165 https://www.cve.org/CVERecord?id=CVE-2022-3165 Référence CVE CVE-2022-33070 https://www.cve.org/CVERecord?id=CVE-2022-33070 Référence CVE CVE-2022-37454 https://www.cve.org/CVERecord?id=CVE-2022-37454 Référence CVE CVE-2022-40898 https://www.cve.org/CVERecord?id=CVE-2022-40898 Référence CVE CVE-2022-44617 https://www.cve.org/CVERecord?id=CVE-2022-44617 Référence CVE CVE-2022-44792 https://www.cve.org/CVERecord?id=CVE-2022-44792 Référence CVE CVE-2022-44793 https://www.cve.org/CVERecord?id=CVE-2022-44793 Référence CVE CVE-2022-45061 https://www.cve.org/CVERecord?id=CVE-2022-45061 Référence CVE CVE-2022-46285 https://www.cve.org/CVERecord?id=CVE-2022-46285 Référence CVE CVE-2022-47629 https://www.cve.org/CVERecord?id=CVE-2022-47629 Référence CVE CVE-2022-4883 https://www.cve.org/CVERecord?id=CVE-2022-4883 Référence CVE CVE-2023-22809 https://www.cve.org/CVERecord?id=CVE-2023-22809 Gestion détaillée du document le 17 avril 2023 Version initiale Alertes Avis Bulletins d’actualités Mentions légales Conditions générales À p

Official advisory
NCSC-NL · Dutch · NCSC-2024-0246Kwetsbaarheden verholpen in Siemens producten

De kwetsbaarheden stellen een kwaadwillende mogelijk in staat aanvallen uit te voeren die kunnen leiden tot de volgende categorieën schade: - Denial-of-Service (DoS) - Manipulatie van gegevens - Omzeilen van beveiligingsmaatregel - (Remote) code execution (Administrator/Root rechten) - (Remote) code execution (Gebruikersrechten) - Toegang tot systeemgegevens - Verhoogde gebruikersrechten De kwaadwillende heeft hiervoor toegang nodig tot de productieomgeving. Het is goed gebruik een dergelijke omgeving niet publiek toegankelijk te hebben.

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 CP 1542SP-1 (6GK7542-6UX00-0XE0); SIMATIC CP 1542SP-1 IRC (6GK7542-6VX00-0XE0); SIMATIC CP 1543SP-1 (6GK7543-6WX00-0XE0); SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL (6AG2542-6VX00-4XE0); SIPLUS ET 200SP CP 1543SP-1 ISEC (6AG1543-6WX00-7XE0); SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL (6AG2543-6WX00-4XE0)
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
Update to V2.3 or later version
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 7 Nov 2022 · Last source change 5 May 2025, 16:12 UTC · CWE-476 · NULL Pointer Dereference

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-2022-47724
Product sourceVendor CSAF · Siemens ProductCERT
Remediation sourceVendor CSAF · Siemens ProductCERT
CWE sourceCISA ADP
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-2022-47724↗Vendor CSAF · Siemens ProductCERT↗CISA Vulnrichment SSVC evidence↗Public exploit reference↗Public exploit 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-2022-44792 · cve.blacktree.nl