CVE-2025-11935— Forward Secrecy Violation in WolfSSL TLS 1.3
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I. Basic Information for CVE-2025-11935
Vulnerability Information
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Vulnerability Title
Forward Secrecy Violation in WolfSSL TLS 1.3
Source: NVD (National Vulnerability Database)
Vulnerability Description
With TLS 1.3 pre-shared key (PSK) a malicious or faulty server could ignore the request for PFS (perfect forward secrecy) and the client would continue on with the connection using PSK without PFS. This happened when a server responded to a ClientHello containing psk_dhe_ke without a key_share extension. The re-use of an authenticated PSK connection that on the clients side unexpectedly did not have PFS, reduces the security of the connection.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
不充分的加密强度
Source: NVD (National Vulnerability Database)
Vulnerability Title
wolfSSL 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预共享密钥可能忽略PFS请求，可能导致连接安全性降低。
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-2025-11935
| # | POC Description | Source Link | Shenlong Link |
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Same Patch Batch · wolfSSL · 2025-11-21 · 7 CVEs total
| CVE-2025-11934 | Improper Validation of Signature Algorithm Used in TLS 1.3 CertificateVerify | |
| CVE-2025-11936 | Potential DoS Vulnerability through Multiple KeyShareEntry with Same Group in TLS 1.3 Clie | |
| CVE-2025-12888 | Constant Time Issue with Xtensa-based ESP32 and X22519 | |
| CVE-2025-11931 | Integer Underflow Leads to Out-of-Bounds Access in XChaCha20-Poly1305 Decrypt | |
| CVE-2025-11932 | Timing Side-Channel in PSK Binder Verification | |
| CVE-2025-12889 | TLS 1.2 Client Can Downgrade Digest Used |
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-326
- CVE-2018-25272
ELBA5 5.8.0 Remote Code Execution via Database Access - CVE-2025-1241
Encryption vulnerable to brute-force decryption in GoAnywher - CVE-2026-5363
Use of weak cryptographic key in TP-Link Archer C7 - CVE-2026-39349
OrangeHRM Uses AES-ECB for Sensitive Data Encryption Enables - CVE-2026-33488
AVideo has a PGP 2FA Bypass via Cryptographically Broken 512
V. Comments for CVE-2025-11935
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