CVE-2026-63450: Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring

Q: How do I fix CVE-2026-63450?

suricata: upgrade to 8.0.6. Exact commands for each OS are on this page.

Q: Is CVE-2026-63450 being exploited?

CVE-2026-63450 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-63450 affect?

CVE-2026-63450 affects suricata. Severity is low (CVSS 3.7). Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 8.0.6, the FTP parser in src/app-layer-ftp.c treats a RETR or STOR command sent before PORT or PASV negotiation a

Q: How urgent is CVE-2026-63450?

Priority 22/100. Remotely exploitable, no login, no user action

Routine

LOW 3.7REMOTEUPGRADE

CVE-2026-63450 is a low-severity flaw (CVSS 3.7) affecting suricata. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 8.0.6, the FTP parser in src/app-layer-ftp.c treats a RETR or STOR command sent before PORT or PASV negotiation as a fatal application-layer error instead of a recoverable protocol event. The fatal state disables FTP application-layer parsing for the remainder of the TCP flow, so later commands can evade parser-dependent

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	3.7 (Low)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 84%)
CISA exploited list	No
Weakness	CWE-755
Published	2026-09-18
Last modified	2026-09-28

Publisher (CNA): GitHub, Inc. · Vendor: oisf

Last updated 2026-09-28 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-18 21:17 UTCPublished CVE record published
2026-09-28 18:33 UTCUpdated Record last modified

oisf suricata UPGRADE

Affected: < 8.0.6

Fixed in: 8.0.6

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy suricata || rpm -q suricata || suricata --version

2. UPGRADE to 8.0.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade suricata

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade suricata

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-63450?

suricata: upgrade to 8.0.6. Exact commands for each OS are on this page.

Is CVE-2026-63450 being exploited?

CVE-2026-63450 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-63450 affect?

CVE-2026-63450 affects suricata. Severity is low (CVSS 3.7). Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 8.0.6, the FTP parser in src/app-layer-ftp.c treats a RETR or STOR command sent before PORT or PASV negotiation a

How urgent is CVE-2026-63450?

Priority 22/100. Remotely exploitable, no login, no user action

Software pages

Suricata and Snort vulnerabilities

Related CVEs

CVE-2026-31931 HIGH 7.5 UPGRADE Suricata is a network IDS, IPS and NSM engine
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CVE-2026-31937 HIGH 7.5 UPGRADE Suricata is a network IDS, IPS and NSM engine
CVE-2026-31932 HIGH 7.5 UPGRADE Suricata is a network IDS, IPS and NSM engine
CVE-2026-31934 HIGH 7.5 UPGRADE Suricata is a network IDS, IPS and NSM engine

References

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