CSIRTS // UNIFIED SECURITY ADVISORY FEEDSYS ● ONLINE · POWERED BY INTELFUSIONS.COM

← Back to feed

[UPDATE] [medium] Netty: Multiple vulnerabilities

mediumCVE-2026-33870CVE-2026-33871
A remote, anonymous attacker can exploit multiple vulnerabilities in Netty to bypass security measures and cause a denial of service.

CSIRTS triage

vendor: Nettyproduct: NettyDenial of serviceAuthentication bypass
What
Multiple vulnerabilities can be exploited by a remote attacker to bypass security measures and cause denial of service.
Who is affected
Deployments of Netty are affected by these vulnerabilities.
Urgency
Remediation is medium urgency due to the potential for denial-of-service attacks.
Action
Apply the latest patches for Netty.

AI-assisted analysis generated from the source advisory — verify against the original.

⚡ Watch Netty

Get an email when a new Netty advisory drops — max one per day, one-click unsubscribe.

Details

Source
CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity
medium
Published
2026-09-01
Exploitation
Not in CISA KEV at last sync
Language
Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0846

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-33870coverage & exploitation statusNVD · CVE.org
CVE-2026-33871coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for Netty

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from CERT-Bund (BSI) Security Advisories