High severity · published Jun 25, 2026
CVE-2026-6325
Out-of-bounds write in SetSuitesHashSigAlgo on oversized signature algorithms list
7.5
CVSS
0.3%
EPSS
No
On KEV
Description
Out-of-bounds write in SetSuitesHashSigAlgo when processing an oversized signature algorithms list, allowing a write past the bounds of the destination buffer.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 22% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WO
wolfSSL · wolfSSL
4.8.0 through 5.9.1 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-6325
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-6325
Issue Tracking
https://github.com/wolfSSL/wolfssl/pull/10204
Vendor Advisory
https://www.wolfssl.com/docs/security-vulnerabilities/
More from wolfSSL
9.8
CVE-2026-7531
Use-after-free in PQC hybrid key-share handling
9.8
CVE-2026-5264
DTLS 1.3 ACK heap buffer overflow
9.8
CVE-2026-5187
Heap Out-of-Bounds Write in DecodeObjectId() in wolfSSL
9.8
CVE-2026-4395
Heap-based buffer overflow in wc_ecc_import_x963_ex KCAPI path
9.8
CVE-2026-3849
Buffer Overflow in HPKE via Oversized ECH Config