CVE-2026-3230— Improper key_share validation in TLS 1.3 HelloRetryRequest
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-3230
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Improper key_share validation in TLS 1.3 HelloRetryRequest
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
wolfSSL（CyaSSL） 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
wolfSSL（CyaSSL）是美国wolfSSL公司的一个针对嵌入式系统开发人员使用的小的、可移植的嵌入式SSL编程库。 wolfSSL（CyaSSL）存在安全漏洞，该漏洞源于TLS 1.3客户端HelloRetryRequest握手逻辑缺少必要的加密步骤，可能导致通过特制的HelloRetryRequest和省略key_share扩展的ServerHello消息，从(EC)DHE共享密钥推导出可预测的流量密钥，从而破坏TLS保护通信的机密性。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-3230
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-3230
请登录查看更多情报信息。
Same Patch Batch · wolfSSL · 2026-03-19 · 11 CVEs total
| CVE-2026-3547 | 7.5 HIGH | wolfSSL: out-of-bounds read (DoS) in ALPN parsing due to incomplete validation |
| CVE-2026-0819 | Stack buffer overflow in PKCS7 SignedData encoding with custom signed attributes | |
| CVE-2026-1005 | Integer underflow leads to out-of-bounds access in sniffer AES-GCM/CCM/ARIA-GCM decrypt pa | |
| CVE-2026-2646 | Heap buffer overflow in session parsing with wolfSSL_d2i_SSL_SESSION() function | |
| CVE-2026-2645 | Acceptance of CertificateVerify Message before ClientKeyExchange in TLS 1.2 | |
| CVE-2026-3548 | Buffer overflow in CRL number parsing in wolfSSL | |
| CVE-2026-3579 | Non-constant time multiplication subroutine __muldi3 on RISC-V RV32I | |
| CVE-2026-3580 | Compiler-induced timing leak in sp_256_get_entry_256_9 on RISC-V | |
| CVE-2026-4395 | Heap-based buffer overflow in wc_ecc_import_x963_ex KCAPI path | |
| CVE-2026-4159 | wc_PKCS7_DecodeEnvelopedData 1 byte out-of-bounds read |
IV. Related Vulnerabilities
Same product: wolfSSL
- CVE-2026-5477
Prefix-substitution forgery via integer overflow in wolfCryp - CVE-2026-5188
Integer underflow in X.509 SAN parsing in wolfSSL - CVE-2026-5500
Improper Validation of AES-GCM Authentication Tag Length in - CVE-2026-5501
Improper Certificate Signature Verification in X.509 Chain V - CVE-2026-5466
wc_VerifyEccsiHash missing sanity check
Same vendor: wolfSSL
- CVE-2026-0930
Potential wolfSSHd Buffer out-of-bounds Read on Windows Hand - CVE-2026-5477
Prefix-substitution forgery via integer overflow in wolfCryp - CVE-2026-5188
Integer underflow in X.509 SAN parsing in wolfSSL - CVE-2026-5500
Improper Validation of AES-GCM Authentication Tag Length in - CVE-2026-5501
Improper Certificate Signature Verification in X.509 Chain V
Same weakness: CWE-20
V. Comments for CVE-2026-3230
No comments yet