wolfSSL up to 5.8.x Post-Quantum Implementation prng seed

CVSS Meta Temp Score
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CTI Interest Score
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3.0$0-$5k0.17

Summaryinfo

A vulnerability labeled as problematic has been found in wolfSSL up to 5.8.x. Affected is an unknown function of the component Post-Quantum Implementation. Such manipulation leads to prng seed. This vulnerability is documented as CVE-2026-3503. The attack can be executed directly on the physical device. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in wolfSSL up to 5.8.x. It has been rated as problematic. Affected by this issue is an unknown part of the component Post-Quantum Implementation. The manipulation with an unknown input leads to a prng seed vulnerability. Using CWE to declare the problem leads to CWE-335. The product uses a Pseudo-Random Number Generator (PRNG) but does not correctly manage seeds. Impacted is confidentiality, and integrity. CVE summarizes:

Protection mechanism failure in wolfCrypt post-quantum implementations (ML-KEM and ML-DSA) in wolfSSL on ARM Cortex-M microcontrollers allows a physical attacker to compromise key material and/or cryptographic outcomes via induced transient faults that corrupt or redirect seed/pointer values during Keccak-based expansion. This issue affects wolfSSL (wolfCrypt): commit hash d86575c766e6e67ef93545fa69c04d6eb49400c6.

The weakness was released by Hariprasad Kelassery Valsaraj. The advisory is available at github.com. This vulnerability is handled as CVE-2026-3503 since 03/03/2026. The exploitation is known to be difficult. Local access is required to approach this attack. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1600.001 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 303109 (Linux Distros Unpatched Vulnerability : CVE-2026-3503), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.9.0 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (303109) and EUVD (EUVD-2026-13149). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 3.1
VulDB Meta Temp Score: 3.0

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Prng seed
CWE: CWE-335 / CWE-331 / CWE-330
CAPEC: 🔒
ATT&CK: 🔒

Physical: Yes
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 303109
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-3503

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: wolfSSL 5.9.0

Timelineinfo

03/03/2026 CVE reserved
03/19/2026 +16 days Advisory disclosed
03/19/2026 +0 days VulDB entry created
03/24/2026 +5 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Researcher: Hariprasad Kelassery Valsaraj
Status: Confirmed

CVE: CVE-2026-3503 (🔒)
GCVE (CVE): GCVE-0-2026-3503
GCVE (VulDB): GCVE-100-351746
EUVD: 🔒

Entryinfo

Created: 03/19/2026 19:48
Updated: 03/24/2026 06:34
Changes: 03/19/2026 19:48 (68), 03/20/2026 00:53 (1), 03/23/2026 22:03 (2), 03/24/2026 06:34 (1)
Complete: 🔍
Cache ID: 216:A2D:103

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