wolfSSL up to 5.9.1 calculation

CVSS Meta Temp Score
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CTI Interest Score
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3.0$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in wolfSSL up to 5.9.1. This vulnerability affects unknown code. Such manipulation leads to calculation. This vulnerability is documented as CVE-2026-10512. The attack can be executed remotely. There is not any exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in wolfSSL up to 5.9.1 and classified as problematic. Affected by this issue is an unknown code block. The manipulation with an unknown input leads to a calculation vulnerability. Using CWE to declare the problem leads to CWE-682. The product performs a calculation that generates incorrect or unintended results that are later used in security-critical decisions or resource management. Impacted is availability. CVE summarizes:

The X25519 x86_64 assembly implementation fails to clear the most significant bit during the final modular reduction, so the computed result may not be fully reduced modulo the field prime 2^255 - 19. This can leave the field element in a non-canonical form, producing an incorrect result from the scalar multiplication and potentially a wrong shared secret. The final carry-propagation chains in the x64 and AVX2 reduction routines could overflow into the top bit, and the high limb was not masked afterward, so the 255-bit field element was left non-canonical.

The weakness was released by Haruki Oyama. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-10512 since 06/01/2026. The exploitation is known to be difficult. The attack may be launched remotely. There are neither technical details nor an exploit publicly available.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

License

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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💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Calculation
CWE: CWE-682
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: github.com

Timelineinfo

06/01/2026 CVE reserved
06/25/2026 +24 days VulDB entry created
06/26/2026 +0 days Advisory disclosed
06/26/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Researcher: Haruki Oyama
Status: Confirmed

CVE: CVE-2026-10512 (🔒)
GCVE (CVE): GCVE-0-2026-10512
GCVE (VulDB): GCVE-100-374036

Entryinfo

Created: 06/26/2026 01:18
Changes: 06/26/2026 01:18 (65)
Complete: 🔍
Cache ID: 216::103

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