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27 vulnerabilities
CVE-2025-12889 (GCVE-0-2025-12889)
Vulnerability from cvelistv5 – Published: 2025-11-21 23:06 – Updated: 2025-11-24 17:56
VLAI?
Summary
With TLS 1.2 connections a client can use any digest, specifically a weaker digest that is supported, rather than those in the CertificateRequest.
Severity ?
CWE
- CWE-20 - Improper Input Validation
Assigner
References
Credits
Jaehun Lee from Pohang University of Science and Technology (POSTECH)
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CVE-2025-11932 (GCVE-0-2025-11932)
Vulnerability from cvelistv5 – Published: 2025-11-21 23:01 – Updated: 2025-11-24 17:57
VLAI?
Summary
The server previously verified the TLS 1.3 PSK binder using a non-constant time method which could potentially leak information about the PSK binder
Severity ?
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
Credits
Luigino Camastra from Aisle Research
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CVE-2025-11931 (GCVE-0-2025-11931)
Vulnerability from cvelistv5 – Published: 2025-11-21 22:57 – Updated: 2025-11-24 15:42
VLAI?
Summary
Integer Underflow Leads to Out-of-Bounds Access in XChaCha20-Poly1305 Decrypt. This issue is hit specifically with a call to the function wc_XChaCha20Poly1305_Decrypt() which is not used with TLS connections, only from direct calls from an application.
Severity ?
CWE
- CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
References
Credits
Luigino Camastra from Aisle Research
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CVE-2025-12888 (GCVE-0-2025-12888)
Vulnerability from cvelistv5 – Published: 2025-11-21 22:50 – Updated: 2025-11-24 15:44
VLAI?
Summary
Vulnerability in X25519 constant-time cryptographic implementations due to timing side channels introduced by compiler optimizations and CPU architecture limitations, specifically with the Xtensa-based ESP32 chips. If targeting Xtensa it is recommended to use the low memory implementations of X25519, which is now turned on as the default for Xtensa.
Severity ?
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
Credits
Adrian Cinal
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CVE-2025-11936 (GCVE-0-2025-11936)
Vulnerability from cvelistv5 – Published: 2025-11-21 22:24 – Updated: 2025-11-24 17:59
VLAI?
Summary
Improper input validation in the TLS 1.3 KeyShareEntry parsing in wolfSSL v5.8.2 on multiple platforms allows a remote unauthenticated attacker to cause a denial-of-service by sending a crafted ClientHello message containing duplicate KeyShareEntry values for the same supported group, leading to excessive CPU and memory consumption during ClientHello processing.
Severity ?
CWE
- CWE-20 - Improper Input Validation
Assigner
References
Credits
Jaehun Lee, Pohang University of Science and Technology (POSTECH)
Kyungmin Bae, Pohang University of Science and Technology (POSTECH)
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CVE-2025-11933 (GCVE-0-2025-11933)
Vulnerability from cvelistv5 – Published: 2025-11-21 22:19 – Updated: 2025-11-24 17:59
VLAI?
Summary
Improper Input Validation in the TLS 1.3 CKS extension parsing in wolfSSL 5.8.2 and earlier on multiple platforms allows a remote unauthenticated attacker to potentially cause a denial-of-service via a crafted ClientHello message with duplicate CKS extensions.
Severity ?
CWE
- CWE-20 - Improper Input Validation
Assigner
References
Credits
Jaehun Lee, Pohang University of Science and Technology (POSTECH)
Kyungmin Bae, Pohang University of Science and Technology (POSTECH)
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CVE-2025-11934 (GCVE-0-2025-11934)
Vulnerability from cvelistv5 – Published: 2025-11-21 22:12 – Updated: 2025-11-24 18:00
VLAI?
Summary
Improper input validation in the TLS 1.3 CertificateVerify signature algorithm negotiation in wolfSSL 5.8.2 and earlier on multiple platforms allows for downgrading the signature algorithm used. For example when a client sends ECDSA P521 as the supported signature algorithm the server previously could respond as ECDSA P256 being the accepted signature algorithm and the connection would continue with using ECDSA P256, if the client supports ECDSA P256.
Severity ?
CWE
- CWE-20 - Improper Input Validation
Assigner
References
Credits
Jaehun Lee, Pohang University of Science and Technology (POSTECH)
Kyungmin Bae, Pohang University of Science and Technology (POSTECH)
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CVE-2025-11935 (GCVE-0-2025-11935)
Vulnerability from cvelistv5 – Published: 2025-11-21 22:04 – Updated: 2025-11-25 18:44
VLAI?
Summary
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.
Severity ?
CWE
- CWE-326 - Inadequate Encryption Strength
Assigner
References
Credits
Jaehun Lee, Pohang University of Science and Technology (POSTECH)
Kyungmin Bae, Pohang University of Science and Technology (POSTECH)
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CVE-2025-11625 (GCVE-0-2025-11625)
Vulnerability from cvelistv5 – Published: 2025-10-21 13:25 – Updated: 2025-10-21 14:04
VLAI?
Summary
Improper host authentication vulnerability in wolfSSH version 1.4.20 and earlier clients that allows authentication bypass and leaking of clients credentials.
Severity ?
CWE
- CWE-287 - Improper Authentication
Assigner
References
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CVE-2025-11624 (GCVE-0-2025-11624)
Vulnerability from cvelistv5 – Published: 2025-10-21 13:14 – Updated: 2025-10-21 14:08
VLAI?
Summary
Potential stack buffer overwrite on the SFTP server side when receiving a malicious packet that has a handle size larger than the system handle or file descriptor size, but smaller than max handle size allowed.
Severity ?
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
Credits
Stanislav Fort of Aisle Research
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CVE-2025-7844 (GCVE-0-2025-7844)
Vulnerability from cvelistv5 – Published: 2025-08-04 21:35 – Updated: 2025-08-05 13:36
VLAI?
Summary
Exporting a TPM based RSA key larger than 2048 bits from the TPM could overrun a stack buffer if the default `MAX_RSA_KEY_BITS=2048` is used. If your TPM 2.0 module supports RSA key sizes larger than 2048 bit and your applications supports creating or importing an RSA private or public key larger than 2048 bits and your application calls `wolfTPM2_RsaKey_TpmToWolf` on that key, then a stack buffer could be overrun. If the `MAX_RSA_KEY_BITS` build-time macro is set correctly (RSA bits match what TPM hardware is capable of) for the hardware target, then a stack overrun is not possible.
Severity ?
CWE
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| wolfSSL Inc. | wolfTPM |
Affected:
0 , ≤ 3.9.2
(git)
|
Credits
Richard Mitev, Giannis Mouzenidis, Patrick Jauernig from SANCTUARY Systems GmbH
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CVE-2025-7396 (GCVE-0-2025-7396)
Vulnerability from cvelistv5 – Published: 2025-07-18 22:51 – Updated: 2025-07-21 15:05
VLAI?
Summary
In wolfSSL release 5.8.2 blinding support is turned on by default for Curve25519 in applicable builds. The blinding configure option is only for the base C implementation of Curve25519. It is not needed, or available with; ARM assembly builds, Intel assembly builds, and the small Curve25519 feature. While the side-channel attack on extracting a private key would be very difficult to execute in practice, enabling blinding provides an additional layer of protection for devices that may be more susceptible to physical access or side-channel observation.
Severity ?
CWE
- CWE-385 - Covert Timing Channel
Assigner
References
Credits
Arnaud Varillon
Laurent Sauvage
Allan Delautre
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CVE-2025-7394 (GCVE-0-2025-7394)
Vulnerability from cvelistv5 – Published: 2025-07-18 22:34 – Updated: 2025-07-21 15:00
VLAI?
Summary
In the OpenSSL compatibility layer implementation, the function RAND_poll() was not behaving as expected and leading to the potential for predictable values returned from RAND_bytes() after fork() is called. This can lead to weak or predictable random numbers generated in applications that are both using RAND_bytes() and doing fork() operations. This only affects applications explicitly calling RAND_bytes() after fork() and does not affect any internal TLS operations. Although RAND_bytes() documentation in OpenSSL calls out not being safe for use with fork() without first calling RAND_poll(), an additional code change was also made in wolfSSL to make RAND_bytes() behave similar to OpenSSL after a fork() call without calling RAND_poll(). Now the Hash-DRBG used gets reseeded after detecting running in a new process. If making use of RAND_bytes() and calling fork() we recommend updating to the latest version of wolfSSL. Thanks to Per Allansson from Appgate for the report.
Severity ?
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
Credits
Per Allansson
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CVE-2025-7395 (GCVE-0-2025-7395)
Vulnerability from cvelistv5 – Published: 2025-07-18 22:15 – Updated: 2025-07-21 14:56
VLAI?
Summary
A certificate verification error in wolfSSL when building with the WOLFSSL_SYS_CA_CERTS and WOLFSSL_APPLE_NATIVE_CERT_VALIDATION options results in the wolfSSL
client failing to properly verify the server certificate's domain name,
allowing any certificate issued by a trusted CA to be accepted regardless of the hostname.
Severity ?
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
Credits
Thomas Leong
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CVE-2024-2881 (GCVE-0-2024-2881)
Vulnerability from cvelistv5 – Published: 2024-08-29 23:10 – Updated: 2024-08-30 14:18
VLAI?
Summary
Fault Injection vulnerability in wc_ed25519_sign_msg function in wolfssl/wolfcrypt/src/ed25519.c in WolfSSL wolfssl5.6.6 on Linux/Windows allows remote attacker co-resides in the same system with a victim process to disclose information and escalate privileges via Rowhammer fault injection to the ed25519_key structure.
Severity ?
6.7 (Medium)
CWE
Assigner
References
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CVE-2024-1545 (GCVE-0-2024-1545)
Vulnerability from cvelistv5 – Published: 2024-08-29 23:02 – Updated: 2024-08-30 14:19
VLAI?
Summary
Fault Injection vulnerability in RsaPrivateDecryption function in wolfssl/wolfcrypt/src/rsa.c in WolfSSL wolfssl5.6.6 on Linux/Windows allows remote attacker co-resides in the same system with a victim process to disclose information and escalate privileges via Rowhammer fault injection to the RsaKey structure.
Severity ?
5.9 (Medium)
CWE
Assigner
References
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CVE-2024-1543 (GCVE-0-2024-1543)
Vulnerability from cvelistv5 – Published: 2024-08-29 22:43 – Updated: 2024-08-30 14:19
VLAI?
Summary
The side-channel protected T-Table implementation in wolfSSL up to version 5.6.5 protects against a side-channel attacker with cache-line resolution. In a controlled environment such as Intel SGX, an attacker can gain a per instruction sub-cache-line resolution allowing them to break the cache-line-level protection. For details on the attack refer to: https://doi.org/10.46586/tches.v2024.i1.457-500
Severity ?
4.1 (Medium)
CWE
- CWE-208 - Observable Timing Discrepancy
Assigner
References
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CVE-2024-1544 (GCVE-0-2024-1544)
Vulnerability from cvelistv5 – Published: 2024-08-27 18:44 – Updated: 2024-08-27 19:14
VLAI?
Summary
Generating the ECDSA nonce k samples a random number r and then
truncates this randomness with a modular reduction mod n where n is the
order of the elliptic curve. Meaning k = r mod n. The division used
during the reduction estimates a factor q_e by dividing the upper two
digits (a digit having e.g. a size of 8 byte) of r by the upper digit of
n and then decrements q_e in a loop until it has the correct size.
Observing the number of times q_e is decremented through a control-flow
revealing side-channel reveals a bias in the most significant bits of
k. Depending on the curve this is either a negligible bias or a
significant bias large enough to reconstruct k with lattice reduction
methods. For SECP160R1, e.g., we find a bias of 15 bits.
Severity ?
4.1 (Medium)
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
Credits
Florian Sieck, Luca Wilke and Thomas Eisenbarth from Universität zu Lübeck
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CVE-2024-5814 (GCVE-0-2024-5814)
Vulnerability from cvelistv5 – Published: 2024-08-27 18:38 – Updated: 2024-08-27 19:21
VLAI?
Summary
A malicious TLS1.2 server can force a TLS1.3 client with downgrade capability to use a ciphersuite that it did not agree to and achieve a successful connection. This is because, aside from the extensions, the client was skipping fully parsing the server hello. https://doi.org/10.46586/tches.v2024.i1.457-500
Severity ?
CWE
- CWE-284 - Improper Access Control
Assigner
References
Credits
Armin Najafabadi
Per Allansson
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CVE-2024-5288 (GCVE-0-2024-5288)
Vulnerability from cvelistv5 – Published: 2024-08-27 18:36 – Updated: 2024-08-27 19:23
VLAI?
Summary
An issue was discovered in wolfSSL before 5.7.0. A safe-error attack via Rowhammer, namely FAULT+PROBE, leads to ECDSA key disclosure. When WOLFSSL_CHECK_SIG_FAULTS is used in signing operations with private ECC keys,
such as in server-side TLS connections, the connection is halted if any fault occurs. The success rate in a certain amount of connection requests can be processed via an advanced technique for ECDSA key recovery.
Severity ?
5.1 (Medium)
CWE
- CWE-922 - Insecure Storage of Sensitive Information
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| wolfSSL Inc. | wolfSSL |
Affected:
0 , ≤ 5.7.0
(git)
|
Credits
Kemal Derya
M. Caner Tol
Berk Sunar
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CVE-2024-5991 (GCVE-0-2024-5991)
Vulnerability from cvelistv5 – Published: 2024-08-27 18:33 – Updated: 2024-08-27 20:06
VLAI?
Summary
In function MatchDomainName(), input param str is treated as a NULL terminated string despite being user provided and unchecked. Specifically, the function X509_check_host() takes in a pointer and length to check against, with no requirements that it be NULL terminated. If a caller was attempting to do a name check on a non-NULL terminated buffer, the code would read beyond the bounds of the input array until it found a NULL terminator.This issue affects wolfSSL: through 5.7.0.
Severity ?
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
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CVE-2024-0901 (GCVE-0-2024-0901)
Vulnerability from cvelistv5 – Published: 2024-03-25 22:37 – Updated: 2024-08-01 18:39
VLAI?
Summary
Remotely executed SEGV and out of bounds read allows malicious packet sender to crash or cause an out of bounds read via sending a malformed packet with the correct length.
Severity ?
7.5 (High)
CWE
- CWE-129 - Improper Validation of Array Index
Assigner
References
Impacted products
Credits
Jiamin Yu
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CVE-2024-2873 (GCVE-0-2024-2873)
Vulnerability from cvelistv5 – Published: 2024-03-25 21:58 – Updated: 2024-08-01 19:50
VLAI?
Summary
A vulnerability was found in wolfSSH's server-side state machine before versions 1.4.17. A malicious client could create channels without first performing user authentication, resulting in unauthorized access.
Severity ?
9.1 (Critical)
CWE
- CWE-287 - Improper Authentication
Assigner
References
| URL | Tags | |
|---|---|---|
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| wolfSSL Inc. | wolfSSH |
Affected:
0 , ≤ v1.4.16
(release bundle)
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CVE-2023-6936 (GCVE-0-2023-6936)
Vulnerability from cvelistv5 – Published: 2024-02-20 21:52 – Updated: 2025-03-26 16:28
VLAI?
Summary
In wolfSSL prior to 5.6.6, if callback functions are enabled (via the WOLFSSL_CALLBACKS flag), then a malicious TLS client or network attacker can trigger a buffer over-read on the heap of 5 bytes (WOLFSSL_CALLBACKS is only intended for debugging).
Severity ?
5.3 (Medium)
CWE
- CWE-126 - Buffer Over-read
Assigner
References
| URL | Tags | |
|---|---|---|
Credits
Lucca Hirschi (Inria, LORIA)
Steve Kremer (Inria, LORIA)
Max Ammann (Trail of Bits)
tlspuffin
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CVE-2023-6937 (GCVE-0-2023-6937)
Vulnerability from cvelistv5 – Published: 2024-02-15 17:21 – Updated: 2025-04-24 15:13
VLAI?
Summary
wolfSSL prior to 5.6.6 did not check that messages in one (D)TLS record do not span key boundaries. As a result, it was possible to combine (D)TLS messages using different keys into one (D)TLS record. The most extreme edge case is that, in (D)TLS 1.3, it was possible that an unencrypted (D)TLS 1.3 record from the server containing first a ServerHello message and then the rest of the first server flight would be accepted by a wolfSSL client. In (D)TLS 1.3 the handshake is encrypted after the ServerHello but a wolfSSL client would accept an unencrypted flight from the server. This does not compromise key negotiation and authentication so it is assigned a low severity rating.
Severity ?
5.3 (Medium)
CWE
- CWE-20 - Improper Input Validation
Assigner
References
| URL | Tags | |
|---|---|---|
Credits
Johannes Wilson from Sectra Communications and Linköping University
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CVE-2023-6935 (GCVE-0-2023-6935)
Vulnerability from cvelistv5 – Published: 2024-02-09 22:25 – Updated: 2024-08-02 08:42
VLAI?
Summary
wolfSSL SP Math All RSA implementation is vulnerable to the Marvin Attack, new variation of a timing Bleichenbacher style attack, when built with the following options to configure:
--enable-all CFLAGS="-DWOLFSSL_STATIC_RSA"
The define “WOLFSSL_STATIC_RSA” enables static RSA cipher suites, which is not recommended, and has been disabled by default since wolfSSL 3.6.6. Therefore the default build since 3.6.6, even with "--enable-all", is not vulnerable to the Marvin Attack. The vulnerability is specific to static RSA cipher suites, and expected to be padding-independent.
The vulnerability allows an attacker to decrypt ciphertexts and forge signatures after probing with a large number of test observations. However the server’s private key is not exposed.
Severity ?
5.9 (Medium)
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
Credits
Hubert Kario
tlsfuzzer
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CVE-2023-3724 (GCVE-0-2023-3724)
Vulnerability from cvelistv5 – Published: 2023-07-17 21:13 – Updated: 2024-10-29 15:53
VLAI?
Summary
If a TLS 1.3 client gets neither a PSK (pre shared key) extension nor a KSE (key share extension) when connecting to a malicious server, a default predictable buffer gets used for the IKM (Input Keying Material) value when generating the session master secret. Using a potentially known IKM value when generating the session master secret key compromises the key generated, allowing an eavesdropper to reconstruct it and potentially allowing access to or meddling with message contents in the session. This issue does not affect client validation of connected servers, nor expose private key information, but could result in an insecure TLS 1.3 session when not controlling both sides of the connection. wolfSSL recommends that TLS 1.3 client side users update the version of wolfSSL used.
Severity ?
9.1 (Critical)
CWE
- CWE-20 - Improper Input Validation
Assigner
References
Impacted products
Credits
Johannes from Sectra Communications and Linköping University
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