CVE-2024-41996: Validating the order of the public keys in the Diffie-Hellman Key Agreement Protocol, when an approved safe prime is used, allows remote attackers (from the client side) to…

High severity · published Aug 26, 2024

CVE-2024-41996

Validating the order of the public keys in the Diffie-Hellman Key Agreement Protocol, when an approved safe prime is used, allows remote attackers (from the client side) to…

7.5

CVSS

1.1%

EPSS

On KEV

Description

Validating the order of the public keys in the Diffie-Hellman Key Agreement Protocol, when an approved safe prime is used, allows remote attackers (from the client side) to trigger unnecessarily expensive server-side DHE modular-exponentiation calculations. The client may cause asymmetric resource consumption. The basic attack scenario is that the client must claim that it can only communicate with DHE, and the server must be configured to allow DHE and validate the order of the public key.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

None

Integrity

None

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)1.1% · higher than 65% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Diffie-hellman Key Exchange · Diffie-hellman Key Exchange Project

0 · source: CISA

RUGGEDCOM RST2428P · Siemens

before V3.3 · source: CISA

SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family · Siemens

before V3.3 · source: CISA

SCALANCE XCH328 · Siemens

before V3.3 · source: CISA

SCALANCE XCM324 · Siemens

before V3.3 · source: CISA

SCALANCE XCM328 · Siemens

before V3.3 · source: CISA

SCALANCE XCM332 · Siemens

before V3.3 · source: CISA

SCALANCE XRH334 (24 V DC, 8xFO, CC) · Siemens

before V3.3 · source: CISA

SCALANCE XRM334 (230 V AC, 12xFO) · Siemens

before V3.3 · source: CISA

SCALANCE XRM334 (230 V AC, 8xFO) · Siemens

before V3.3 · source: CISA

SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+) · Siemens

before V3.3 · source: CISA

SCALANCE XRM334 (24 V DC, 12xFO) · Siemens

before V3.3 · source: CISA

In the news

VulnerabilityCritical

Siemens SIDIS Prime

View CSAF Summary SIDIS Prime before V4.0.800 is affected by multiple vulnerabilities in the components OpenSSL, SQLite, and several Node.js packages as described below. Siemens has released a new version of SIDIS Prime and recommends to update to the latest version. The following versions of Siemens SIDIS Prime are affected: SIDIS Prime vers:intdot/<4.0.800 (CVE-2024-29857, CVE-2024-30171, CVE-2024-30172, CVE-2024-41996, CVE-2025-6965, CVE-2025-7783, CVE-2025-9230, CVE-2025-9232, CVE-2025-9670, CVE-2025-12816, CVE-2025-15284, CVE-2025-58751, CVE-2025-58752, CVE-2025-58754, CVE-2025-62522, CVE-2025-64718, CVE-2025-64756, CVE-2025-66030, CVE-2025-66031, CVE-2025-66035, CVE-2025-66412, CVE-2025-69277, CVE-2026-22610) CVSS Vendor Equipment Vulnerabilities v3 8.7 Siemens Siemens SIDIS Prime Out-of-bounds Read, Observable Discrepancy, Improper Input Validation, Improper Certificate Validation, Numeric Truncation Error, Use of Insufficiently Random Values, Out-of-bounds Write, Inefficient Regular Expression Complexity, Interpretation Conflict, Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), Relative Path Traversal, Allocation of Resources Without Limits or Throttling, Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution'), Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'), Integer Overflow or Wraparound, Uncontrolled Recursio...

CVE-2024-29857 CVE-2024-30171 CVE-2024-30172

Mar 12, 2026·CISA Advisories

VulnerabilityHigh

Siemens SINEC OS

View CSAF Summary SINEC OS before V3.3 contains third-party components with multiple vulnerabilities. Siemens has released new versions for the affected products and recommends to update to the latest versions. The following versions of Siemens SINEC OS are affected: RUGGEDCOM RST2428P (6GK6242-6PA00) vers:intdot/<3.3 (CVE-2022-48174, CVE-2023-7256, CVE-2023-39810, CVE-2023-42363, CVE-2023-42364, CVE-2023-42365, CVE-2023-42366, CVE-2024-6197, CVE-2024-6874, CVE-2024-7264, CVE-2024-8006, CVE-2024-8096, CVE-2024-9681, CVE-2024-11053, CVE-2024-12718, CVE-2024-41996, CVE-2024-47619, CVE-2024-52533, CVE-2025-0167, CVE-2025-0665, CVE-2025-0725, CVE-2025-1390, CVE-2025-3360, CVE-2025-4138, CVE-2025-4330, CVE-2025-4373, CVE-2025-4435, CVE-2025-4516, CVE-2025-4517, CVE-2025-6141, CVE-2025-9086, CVE-2025-9230, CVE-2025-9231, CVE-2025-9232, CVE-2025-10148, CVE-2025-27587, CVE-2025-32433, CVE-2025-38084, CVE-2025-38085, CVE-2025-38086, CVE-2025-38345, CVE-2025-38350, CVE-2025-38498, CVE-2025-39839, CVE-2025-39841, CVE-2025-39846, CVE-2025-39853, CVE-2025-39860, CVE-2025-39864, CVE-2025-39865, CVE-2025-59375) SCALANCE XCH328 (6GK5328-4TS01-2EC2) vers:intdot/<3.3 (CVE-2022-48174, CVE-2023-7256, CVE-2023-39810, CVE-2023-42363, CVE-2023-42364, CVE-2023-42365, CVE-2023-42366, CVE-2024-6197, CVE-2024-6874, CVE-2024-7264, CVE-2024-8006, CVE-2024-8096, CVE-2024-9681, CVE-2024-11053, CVE-2024-12718, CVE-2024-41996, CVE-2024-47619, CVE-2024-52533, CVE-2025-0167, CVE-2025-0665...

CVE-2022-48174 CVE-2023-7256 CVE-2023-39810

Feb 12, 2026·CISA Advisories

Affected product

Diffie-hellman Key Exchange

Diffie-hellman Key Exchange Project

All Diffie-hellman Key Exchange CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2024-41996

CVE.org

https://www.cve.org/CVERecord?id=CVE-2024-41996

dheatattack.gitlab.io