VulnSocial

CVE-2026-3547Disclosure(wolfssl / wolfssl)

LOWCVSS 7.5 · HIGH

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Out-of-bounds read in ALPN parsing due to incomplete validation. wolfSSL 5.8.4 and earlier contained an out-of-bounds read in ALPN handling when built with ALPN enabled (HAVE_ALPN / --enable-alpn). A crafted ALPN protocol list could trigger an out-of-bounds read, leading to a potential process crash (denial of service). Note that ALPN is disabled by default, but is enabled for these 3rd party compatibility features: enable-apachehttpd, enable-bind, enable-curl, enable-haproxy, enable-hitch, enable-lighty, enable-jni, enable-nginx, enable-quic.

wolfssl CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Patch / fix
Weakness type (CWE)
CWE-125

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • wolfssl

Threat summary

  • 3 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 3 signals
  • Disclosure: 2 classified signals
  • General: 1 classified signal
  • Peaked at 2 mentions on most recent observed day (2026-03-23)
  • 3 total mentions across 2 days

Affected systems

Vendors
wolfssl
Products
wolfssl

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-03-19: 1Mentions · 2026-03-23: 2Technical Details · 2026-03-19: 1Technical Details · 2026-03-23: 203-1903-23
Signal classification2 categories
Disclosure
266.7%
General
133.3%
Referenced assets3 URLs
Classification over time
DateTotalLabels
2026-03-191
General1
2026-03-232
Disclosure2
Full discourse3 posts
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-3547 Out-of-bounds read in ALPN parsing due to incomplete validation. wolfSSL 5.8.4 and earlier contained an out-of-bounds read in ALPN handling when built with ALPN enabled… https://www.cve.org/CVERecord?id=CVE-2026-3547 ----- Traducción: CVE-2026-3547 Lec… http://infoflow.cloud`

    Post summary

    The tweet announces CVE‑2026‑3547, describing an out‑of‑bounds read in ALPN parsing for wolfSSL 5.8.4 and earlier when ALPN is enabled, without providing any PoC, exploit, or patch details.

    0000019
    61 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-3547 Out-of-bounds read in ALPN parsing due to incomplete validation. wolfSSL 5.8.4 and earlier contained an out-of-bounds read in ALPN handling when built with ALPN enabled… https://www.cve.org/CVERecord?id=CVE-2026-3547

    Post summary

    The post reports an out-of-bounds read in wolfSSL’s ALPN parsing for versions 5.8.4 and earlier, offering technical details but no PoC, patch, or exploitation evidence.

    00000149
    56.8K followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    General

    CVE-2026-3547 Out-of-Bounds Read Vulnerability in wolfSSL 5.8.4 ALPN Parsing https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-3547

    Post summary

    The tweet links to a vulmon.com page describing an out‑of‑bounds read vulnerability in wolfSSL 5.8.4 without further details about PoC, exploit code, patch, or active exploitation.

    0000035
    4.0K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appwolfsslwolfssl---

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