---
cve: "CVE-2026-15442"
severity: "LOW"
cvss: 2.3
epss: "0.3%"
vendor: "wolfSSL"
kev: false
exploited: false
published: "2026-09-27 10:16:56"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-10-02T22:20:46+02:00"
---

# CVE-2026-15442

> 2.3 LOW · 🧪 PoC

## Beschreibung

In all builds that make use of (D)TLS, including default builds, there is a series of conditional states during the TLS shutdown which could lead to a heap-use-after free. If an application ended up getting a partial wolfSSL_read() which is sometimes caused by a small user buffer  passed in, then called wolfSSL_shutdown for a bidirectional close and attempted to wolfSSL_read() again while the peer continues trying to send data during the shutdown it would lead to a state where a potential heap-use-after free happened.

## CNA-Record (Kanon, cvelistV5)

- CNA: **wolfSSL**
- State: PUBLISHED
- Stand: 2026-09-30 10:48:05
- CNA-CVSS: **2.3** (`CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **no**
  - Technical Impact: **partial**

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |

## Referenzen

- <https://github.com/wolfSSL/wolfssl/pull/10863>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-15442) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_