NVD - CVE-2026-5503 (original) (raw)
Initial Analysis by NIST 4/27/2026 1:53:27 PM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Added | CVSS V3.1 | AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H | |
| Added | CPE Configuration | OR *cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:* versions up to (including) 5.9.0 | |
| Added | Reference Type | wolfSSL Inc.: https://github.com/wolfSSL/wolfssl/pull/10102 Types: Issue Tracking |
New CVE Received from wolfSSL Inc. 4/09/2026 7:17:01 PM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Added | Description | In TLSX_EchChangeSNI, the ctx->extensions branch set extensions unconditionally even when TLSX_Find returned NULL. This caused TLSX_UseSNI to attach the attacker-controlled publicName to the shared WOLFSSL_CTX when no inner SNI was configured. TLSX_EchRestoreSNI then failed to clean it up because its removal was gated on serverNameX != NULL. The inner ClientHello was sized before the pollution but written after it, causing TLSX_SNI_Write to memcpy 255 bytes past the allocation boundary. | |
| Added | CVSS V4.0 | AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | |
| Added | CWE | CWE-787 | |
| Added | Reference | https://github.com/wolfSSL/wolfssl/pull/10102 |