VDB-351959 · CVE-2026-3230 · Nessus 303244

wolfSSL up to 5.8.x TLS 1.3 client HelloRetryRequest Handshake improper authentication

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3.0	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical has been found in wolfSSL up to 5.8.x. This vulnerability affects unknown code of the component TLS 1.3 client HelloRetryRequest Handshake. The manipulation leads to improper authentication. This vulnerability is traded as CVE-2026-3230. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in wolfSSL up to 5.8.x and classified as problematic. This issue affects some unknown processing of the component TLS 1.3 client HelloRetryRequest Handshake. The manipulation with an unknown input leads to a improper authentication vulnerability. Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality. The summary by CVE is:

Missing required cryptographic step in the TLS 1.3 client HelloRetryRequest handshake logic in wolfSSL could lead to a compromise in the confidentiality of TLS-protected communications via a crafted HelloRetryRequest followed by a ServerHello message that omits the required key_share extension, resulting in derivation of predictable traffic secrets from (EC)DHE shared secret. This issue does not affect the client's authentication of the server during TLS handshakes.

The weakness was shared by Jaehun Lee. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-3230 since 02/25/2026. The exploitation is known to be difficult. The attack may be initiated remotely. Additional levels of successful authentication are needed for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 303244 (Linux Distros Unpatched Vulnerability : CVE-2026-3230), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.9.0 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (303244). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

wolfSSL

Version

License

open-source

Website

Product: https://github.com/wolfSSL/wolfssl/

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: 3.0
VulDB Meta Temp Score: 3.0

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 2.7
NVD Vector: 🔒

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 303244
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-3230

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: wolfSSL 5.9.0
Patch: github.com

Timelineinfo

02/25/2026 CVE reserved
03/20/2026 +23 days Advisory disclosed
03/20/2026 +0 days VulDB entry created
03/26/2026 +6 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Researcher: Jaehun Lee
Status: Confirmed

CVE: CVE-2026-3230 (🔒)
GCVE (CVE): GCVE-0-2026-3230
GCVE (VulDB): GCVE-100-351959

Entryinfo

Created: 03/20/2026 08:25
Updated: 03/26/2026 19:54
Changes: 03/20/2026 08:25 (72), 03/22/2026 18:37 (2), 03/22/2026 20:43 (1), 03/24/2026 13:12 (1), 03/26/2026 19:54 (11)
Complete: 🔍
Cache ID: 216::103