CVE-2024-12243Network attack vector

Denial of service via quadratic DER decoding

Published Feb 10, 2025 · Updated Jul 14, 2026

Algorithmic-complexity denial of service in GnuTLS allows remote attackers to interrupt TLS services with a crafted certificate. During DER decoding, libtasn1 repeatedly searches backward through linked-list SEQUENCE OF or SET OF nodes, turning parent lookup into quadratic work. Any GnuTLS application that accepts an attacker-controlled certificate can become slow or unresponsive; confidentiality and integrity remain unaffected.

CVSS severity5.3
Medium
EPSS probability1.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Algorithmic-complexity denial of service in GnuTLS allows remote attackers to interrupt TLS services with a crafted certificate. During DER decoding, libtasn1 repeatedly searches backward through linked-list SEQUENCE OF or SET OF nodes, turning parent lookup into quadratic work. Any GnuTLS application that accepts an attacker-controlled certificate can become slow or unresponsive; confidentiality and integrity remain unaffected.

The record

CVE
CVE-2024-12243
Published
Feb 10, 2025
Updated
Jul 14, 2026
Vendor
Siemens
Product
RUGGEDCOM ROX RX1500
Classifications
CWE-407, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <V2.17.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Siemens · RUGGEDCOM ROX RX1500version=0 <V2.17.0
Siemens · RUGGEDCOM ROX RX5000version=0 <V2.17.0
Siemens · RUGGEDCOM ROX RX1511version=0 <V2.17.0
Siemens · RUGGEDCOM ROX MX5000REversion=0 <V2.17.0
Siemens · SIPLUS S7-1500 CPU 1518-4 PN/DP MFPversion=V3.1.5 <*
Siemens · RUGGEDCOM ROX RX1536version=0 <V2.17.0
389 Directory Server · Red Hat Discovery 1Affected versions are unavailable in this record.
Siemens · RUGGEDCOM ROX RX1512version=0 <V2.17.0
Siemens · SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPversion=V3.1.5 <*
389 Directory Server · Red Hat Enterprise Linux 10Affected versions are unavailable in this record.
GnuTLS Project · GnuTLSversion=0 <=3.6.16; version=3.7.0 <=3.7.11; version=3.8.0 <3.8.8
389 Directory Server · Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsAffected versions are unavailable in this record.
Siemens · RUGGEDCOM ROX RX1510version=0 <V2.17.0
389 Directory Server · Red Hat Enterprise Linux 9.4 Extended Update SupportAffected versions are unavailable in this record.
Siemens · RUGGEDCOM ROX RX1524version=0 <V2.17.0
Siemens · RUGGEDCOM ROX RX1501version=0 <V2.17.0
Siemens · SIMATIC S7-1500 CPU 1518-4 PN/DP MFPversion=V3.1.5 <*
389 Directory Server · Red Hat Enterprise Linux 9Affected versions are unavailable in this record.
389 Directory Server · Red Hat OpenShift Container Platform 4Affected versions are unavailable in this record.
Siemens · RUGGEDCOM ROX RX1400version=0 <V2.17.0
Siemens · RUGGEDCOM ROX MX5000version=0 <V2.17.0
389 Directory Server · Red Hat Enterprise Linux 8Affected versions are unavailable in this record.

Published CVSS scores

5.3Siemens ProductCERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
5.3Red HatCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-407Inefficient Algorithmic Complexity
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo