CVE-2026-5500Disclosure(wolfssl / wolfssl)

LOWCVSS 5.9 · MEDIUM

Signal is active with 1 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

wolfSSL's wc_PKCS7_DecodeAuthEnvelopedData() does not properly sanitize the AES-GCM authentication tag length received and has no lower bounds check. A man-in-the-middle can therefore truncate the mac field from 16 bytes to 1 byte, reducing the tag check from 2⁻¹²⁸ to 2⁻⁸.

wolfssl CVEs Back to dashboard

0.0/ 10 priority

Sources & remediation

Other references

https://github.com/wolfSSL/wolfssl/pull/10102

Weakness type (CWE)

CWE-20

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

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 2 signals
Disclosure: 2 classified signals
General: 1 classified signal
Peaked 1d ago at 2 mentions (2026-04-10); latest day: 1
3 total mentions across 2 days

Affected systems

Vendors

wolfssl

Products

wolfssl

Deep dive

Activity timeline3 mentions / 2d

Signal classification2 categories

Disclosure

266.7%

General

133.3%

Referenced assets3 URLs

By indicator

Classification over time

Date	Total	Labels

2026-04-10	2	Disclosure2
2026-04-11	1	General1

Full discourse3 posts

CVE@CVEnew181d
Disclosure
CVE-2026-5500 wolfSSL's wc_PKCS7_DecodeAuthEnvelopedData() does not properly sanitize the AES-GCM authentication tag length received and has no lower bounds check. A man-in-the-middl… https://www.cve.org/CVERecord?id=CVE-2026-5500
Post summary
The tweet announces a vulnerability in wolfSSL where the PKCS7 decoder does not sanitize AES‑GCM authentication tag length, detailing the flaw but not providing a patch, PoC, or evidence of exploitation.
00010123
57.0K followersView on X
CVEarity@CVEarity180d
General
⚡ New CVE Alert: CVE-2026-5500 📊 Severity: 8.7 🚨 Risk Level: High 🧩 Affects: Multiple / Unspecified Products Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-5500 #CVE-2026-5500 #CVE #High #CyberSecurity #InfoSec https://t.co/uY28M2v0Kz
Post summary
The tweet announces CVE-2026-5500 with a high severity rating but provides no technical details, PoC, exploit info, or patch guidance.
0000041
125 followersView on X
Vulmon Vulnerability Feed@VulmonFeeds181d
Disclosure
CVE-2026-5500 Authentication Tag Length Validation Flaw in wolfSSL wc_PKCS7_DecodeAuthEnvelopedData() https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-5500
Post summary
The snippet announces a newly disclosed authentication tag length validation flaw in wolfSSL's PKCS7 decoding routine, offering no PoC, exploit details, or patch information.
0000039
4.0K followersView on X

CPE platform detail1 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

1 of 1 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	wolfssl	wolfssl	-	-	-

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