VDB
CVE-2026-5778
CVE-2026-5778
PUBLISHED
CVSS 2.1 LOW
Reported by wolfSSL · Published April 9, 2026
Integer underflow in wolfSSL packet sniffer <= 5.9.0 allows an attacker to cause a program crash in the AEAD decryption path by injecting a TLS record shorter than the explicit IV plus authentication tag into traffic inspected by ssl_DecodePacket. The underflow wraps a 16-bit length to a large value that is passed to AEAD decryption routines, causing a large out-of-bounds read and crash. An unauthenticated attacker can trigger this remotely via malformed TLS Application Data records.
EPSS 0.05% · 16.1th percentile
Risk Scores
CVSS v4.0
2.1
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
EPSS Score
0.05%
16.1th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| wolfSSL | wolfSSL | 0 |
| wolfSSL | wolfSSL | 0 |
Timeline
- Apr 9, 2026 CVE Published
- Apr 10, 2026 EPSS Score
- May 18, 2026 EPSS Score
- May 19, 2026 EPSS Score
- May 20, 2026 EPSS Score
- May 21, 2026 EPSS Score
- May 22, 2026 EPSS Score
- May 23, 2026 EPSS Score
- May 24, 2026 EPSS Score
- May 25, 2026 EPSS Score
- May 26, 2026 EPSS Score
- May 27, 2026 EPSS Score