WO
Product
wolfssl
by wolfssl · last CVE Sep 27, 2026
152
CVEs
0
On KEV
9.8
Max CVSS
0
New 30D
Severity mix
Critical 27High 55Medium 66Low 4
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Add wolfssl to your stack to get only the CVEs that touch what you run.

CVECVSSEPSSPublishedSummary · affected versions
CVE-2026-7531
9.8
0%
Jun 25
Use-after-free in PQC hybrid key-share handling
Affected: 5.8.0 through 5.9.1
CVE-2026-5264
9.8
0%
Apr 9
DTLS 1.3 ACK heap buffer overflow
Affected: before 5.9.1
CVE-2026-5187
9.8
0%
Apr 9
Heap Out-of-Bounds Write in DecodeObjectId() in wolfSSL
Affected: through 5.9.0
CVE-2026-4395
9.8
0%
Mar 19
Heap-based buffer overflow in wc_ecc_import_x963_ex KCAPI path
Affected: through 5.8.4
CVE-2026-3849
9.8
0%
Mar 19
Buffer Overflow in HPKE via Oversized ECH Config
Affected: 5.6.0 before 5.9.0
CVE-2026-3549
9.8
0%
Mar 19
ECH parsing heap buffer overflow
Affected: before 5.9.0
CVE-2026-3548
9.8
0%
Mar 19
Buffer overflow in CRL number parsing in wolfSSL
Affected: before 5.9.0
CVE-2025-7394
9.8
0%
Jul 18
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…
Affected: 3.15.0 through 5.8.0
CVE-2021-37155
9.8
1%
Jul 21
wolfSSL 4.6.x through 4.7.x before 4.8.0 does not produce a failure outcome when the serial number in an OCSP request differs from the serial number in the OCSP response
Affected: 4.6.0 before 4.8.0
CVE-2020-36177
9.8
4%
Jan 6
RsaPad_PSS in wolfcrypt/src/rsa.c in wolfSSL before 4.6.0 has an out-of-bounds write for certain relationships between key size and digest size
Affected: before 4.6.0
CVE-2014-2898
9.8
3%
Jan 28
wolfSSL CyaSSL before 2.9.4 allows remote attackers to have unspecified impact via multiple calls to the CyaSSL_read function which triggers an out-of-bounds read when an error…
Affected: before 2.9.0
CVE-2014-2897
9.8
3%
Jan 28
The SSL 3 HMAC functionality in wolfSSL CyaSSL 2.5.0 before 2.9.4 does not check the padding length when verification fails, which allows remote attackers to have unspecified…
Affected: 2.5.0 before 2.9.4
CVE-2014-2896
9.8
3%
Jan 28
The DoAlert function in the (1) TLS and (2) DTLS implementations in wolfSSL CyaSSL before 2.9.4 allows remote attackers to have unspecified impact and vectors, which trigger…
Affected: 2.5.0 before 2.9.4
CVE-2019-16748
9.8
1%
Sep 24
In wolfSSL through 4.1.0, there is a missing sanity check of memory accesses in parsing ASN.1 certificate data while handshaking
Affected: through 4.1.0
CVE-2019-15651
9.8
1%
Aug 26
wolfSSL 4.1.0 has a one-byte heap-based buffer over-read in DecodeCertExtensions in wolfcrypt/src/asn.c because reading the ASN_BOOLEAN byte is mishandled for a crafted DER…
Affected: 4.1.0
CVE-2019-11873
9.8
9%
May 23
wolfSSL 4.0.0 has a Buffer Overflow in DoPreSharedKeys in tls13.c when a current identity size is greater than a client identity size
Affected: 4.0
CVE-2019-6439
9.8
3%
Jan 16
examples/benchmark/tls_bench.c in a benchmark tool in wolfSSL through 3.15.7 has a heap-based buffer overflow
Affected: through 3.15.7
CVE-2017-2800
9.8
9%
May 24
A specially crafted x509 certificate can cause a single out of bounds byte overwrite in wolfSSL through 3.10.2 resulting in potential certificate validation vulnerabilities,…
Affected: through 3.10.2
CVE-2026-89134
9.1
0%
Sep 27
Subject CN name-constraint check bypassed when non-DNS SAN present
Affected: 5.9.2
CVE-2026-6094
9.1
1%
Jun 25
Heap buffer overread in wc_PKCS7_DecodeEnvelopedData parsing crafted PKCS7 EnvelopedData
Affected: 5.8.0 through 5.9.1
CVE-2026-5393
9.1
0%
Apr 9
OOB Read in DoTls13CertificateVerify with WOLFSSL_DUAL_ALG_CERTS
Affected: before 5.9.1
CVE-2026-5503
9.1
1%
Apr 9
out-of-bounds write in TLSX_EchChangeSNI via attacker-controlled publicName
Affected: through 5.9.0
CVE-2026-5194
9.1
1%
Apr 9
wolfSSL ECDSA Certificate Verification
Affected: 3.12.0 before 5.9.1
CVE-2024-0901
9.1
1%
Mar 25
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
Affected: 3.12.2 through 5.6.6
CVE-2023-6936
9.1
1%
Feb 20
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…
Affected: before 5.6.6
CVE-2022-42905
9.1
2%
Nov 6
In wolfSSL before 5.5.2, if callback functions are enabled (via the WOLFSSL_CALLBACKS flag), then a malicious TLS 1.3 client or network attacker can trigger a buffer over-read on…
Affected: before 5.5.2
CVE-2022-23408
9.1
1%
Jan 18
wolfSSL 5.x before 5.1.1 uses non-random IV values in certain situations
Affected: 5.0.0 before 5.1.1
CVE-2024-2881
8.8
0%
Aug 30
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…
Affected: 5.6.6
CVE-2024-1545
8.8
1%
Aug 29
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…
Affected: 5.6.6
CVE-2023-3724
8.8
1%
Jul 17
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…
Affected: before 5.6.2
CVE-2026-89136
8.3
0%
Sep 27
Client accepts unsolicited RawPublicKey server certificate type
Affected: 5.6.0 through 5.9.2
CVE-2026-93302
8.2
0%
Sep 27
Trusted peer certificate match ignores public key, allowing forged CA clones
Affected: 5.3.0 through 5.9.2
CVE-2025-11931
8.2
0%
Nov 21
Integer Underflow Leads to Out-of-Bounds Access in XChaCha20-Poly1305 Decrypt
Affected: 5.8.4
CVE-2026-5188
8.1
0%
Apr 10
Integer underflow in X.509 SAN parsing in wolfSSL
Affected: through 5.9.0
CVE-2026-5501
8.1
0%
Apr 10
Improper Certificate Signature Verification in X.509 Chain Validation Allows Forged Leaf Certificates
Affected: through 5.9.0
CVE-2026-5466
8.1
0%
Apr 10
wc_VerifyEccsiHash missing sanity check
Affected: before 5.9.1
CVE-2026-5479
8.1
0%
Apr 10
wolfSSL EVP ChaCha20-Poly1305 AEAD authentication tag
Affected: before 5.9.1
CVE-2026-2646
8.1
0%
Mar 19
Heap buffer overflow in session parsing with wolfSSL_d2i_SSL_SESSION() function
Affected: through 5.8.4
CVE-2021-3336
8.1
1%
Jan 29
DoTls13CertificateVerify in tls13.c in wolfSSL before 4.7.0 does not cease processing for certain anomalous peer behavior (sending an ED22519, ED448, ECC, or RSA signature without…
Affected: before 4.7.0
CVE-2026-5295
8.0
0%
Apr 9
Stack Buffer Overflow in wolfSSL PKCS7 wc_PKCS7_DecryptOri() via Oversized OID
Affected: before 5.9.1
CVE-2017-8854
7.8
2%
May 9
wolfSSL before 3.10.2 has an out-of-bounds memory access with loading crafted DH parameters, aka a buffer overflow triggered by a malformed temporary DH file
Affected: through 3.10.0a
CVE-2026-94418
7.5
0%
Sep 27
Signature failure masked by date error under WOLFSSL_SMALL_CERT_VERIFY
Affected: 3.15.5 through 5.9.2
CVE-2026-7511
7.5
0%
Jun 25
PKCS7_verify signer confusion allows forged signatures to be accepted
Affected: 3.15.5 through 5.9.1
CVE-2026-7532
7.5
0%
Jun 25
iPAddress name constraints not enforced when WOLFSSL_IP_ALT_NAME is undefined
Affected: through 5.9.1
CVE-2026-8720
7.5
0%
Jun 25
HMAC-BLAKE2 final discards message when key length exceeds block size
Affected: 5.9.0 through 5.9.1
CVE-2026-11703
7.5
0%
Jun 25
Missing SNI/ALPN binding on stateful (session-ID) TLS session resumption
Affected: 3.15.0 through 5.9.1
CVE-2026-6325
7.5
0%
Jun 25
Out-of-bounds write in SetSuitesHashSigAlgo on oversized signature algorithms list
Affected: 4.8.0 through 5.9.1
CVE-2026-6331
7.5
0%
Jun 25
HMAC zero-length tag forgery in EVP_DigestVerifyFinal
Affected: 3.15.5 through 5.9.1
CVE-2026-6679
7.5
1%
Jun 25
DTLS 1.3 ACK serialization heap buffer overflow via integer truncation
Affected: 5.4.0 through 5.9.0
CVE-2026-6731
7.5
0%
Jun 25
X.509 name constraint bypass via Subject CN treated as a DNS name
Affected: 3.9.10 through 5.9.1
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