6.9
CVE-2026-3849
- EPSS 0.29%
- Veröffentlicht 19.03.2026 20:29:30
- Zuletzt bearbeitet 20.03.2026 13:39:46
- Quelle facts@wolfssl.com
- CVE-Watchlists
- Unerledigt
Stack Buffer Overflow in wc_HpkeLabeledExtract via Oversized ECH Config. A vulnerability existed in wolfSSL 5.8.4 ECH (Encrypted Client Hello) support, where a maliciously crafted ECH config could cause a stack buffer overflow on the client side, leading to potential remote execution and client program crash. This could be exploited by a malicious TLS server supporting ECH. Note that ECH is off by default, and is only enabled with enable-ech.
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Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerwolfSSL Inc.
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Produkt
wolfSSL
Default Statusunaffected
Version <=
v5.8.4-stable
Version
v5.6.0-stable
Status
affected
| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.29% | 0.52 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| facts@wolfssl.com | 6.9 | 0 | 0 |
CVSS:4.0/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:D/RE:M/U:Amber
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CWE-787 Out-of-bounds Write
The product writes data past the end, or before the beginning, of the intended buffer.