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.
Metrics
Affected Vendors & Products
No data.
No data.
No data.
No data.
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
| Link | Providers |
|---|---|
| https://github.com/wolfSSL/wolfssl/pull/10125 |
|
History
Thu, 09 Apr 2026 22:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Integer underflow leads to out-of-bounds access in sniffer ChaCha decrypt path. | |
| Weaknesses | CWE-191 | |
| References |
| |
| Metrics |
cvssV4_0
|
Projects
Sign in to view the affected projects.
MITRE
Status: PUBLISHED
Assigner: wolfSSL
Published:
Updated: 2026-04-09T21:45:09.053Z
Reserved: 2026-04-08T08:25:15.400Z
Link: CVE-2026-5778
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-04-09T22:16:37.097
Modified: 2026-04-09T22:16:37.097
Link: CVE-2026-5778
Redhat
No data.
OpenCVE Enrichment
No data.
Weaknesses