A HIGH-severity vulnerability identified as CVE-2026-7164 has been published on April 30, 2026 with a CVSS base score of 7.5. This security advisory provides a detailed breakdown of the vulnerability, its potential impact, weakness classification, and actionable steps to protect your systems.
Vulnerability Details
CVE ID: CVE-2026-7164
Severity: HIGH
CVSS Score: 7.5
Published: April 30, 2026
Weakness (CWE): CWE-674
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Confidentiality Impact | None |
| Integrity Impact | None |
| Availability Impact | High |
Technical Description
Incorrect packet validation allowed unbounded recursion parsing SCTP chunk parameters. This can eventually result in a stack overflow and panic. Remote attackers can craft packets which cause affected systems to panic. This affects any system where pf is configured to process traffic, independent of the configured ruleset.
Potential Impact
If exploited, this high-severity vulnerability could allow an attacker to cause a denial of service. Organizations running affected software should treat this as a priority remediation item.
Recommended Action
No official patch is available yet. Until one is released:
- Monitor the official NVD page and vendor channels for patch announcements.
- Restrict access to the affected system or service where possible.
- Apply network-level mitigations such as firewall rules or WAF policies.
- Enable logging and alerting for anomalous activity related to this vulnerability.
- Review your incident response plan in case of active exploitation.
References
Related Security Advisories
- [HIGH] CVE-2026-22070 — CVSS 7.1 (April 30, 2026) — HIGH / CVSS 7.1
- [HIGH] CVE-2026-42377 — CVSS 7.3 (April 29, 2026) — HIGH / CVSS 7.3
- [HIGH] CVE-2024-54012 — CVSS 8.5 (April 28, 2026) — HIGH / CVSS 8.5
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