# The Libreswan Project Libreswan vulnerabilities

Source: https://junglewise.ai/threats/technologies/libreswan  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/libreswan.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 4 vulnerabilities in The Libreswan Project Libreswan: 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-14957, was published on 2 September 2026. Nothing was published in the last eight weeks.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 1
- All time: 4 (0 critical, 0 exploited in the wild)

## About The Libreswan Project Libreswan

An open-source implementation of the IPsec and IKE VPN protocols for Linux and other Unix-like systems.

## Latest The Libreswan Project Libreswan vulnerabilities

- [CVE-2026-14957: Libreswan add_decoded_cert assertion failure in FIPS mode](https://junglewise.ai/threats/cve-2026-14957-libreswan-add-decoded-cert-assertion-failure-in-fips-mode) (high, CVSS 7.5, published 2 Sep 2026)
- [CVE-2026-50722: Libreswan signature verification bypass and DoS in IKEv2 AUTH payload](https://junglewise.ai/threats/cve-2026-50722-libreswan-signature-verification-bypass-and-dos-in-ikev2-auth) (high, CVSS 8.1, published 2 Jul 2026)
- [CVE-2026-50721: Libreswan improper signature verification in IKEv1 RSA authentication](https://junglewise.ai/threats/cve-2026-50721-libreswan-improper-signature-verification-in-ikev1-rsa) (high, CVSS 8.1, published 2 Jul 2026)
- [CVE-2026-12413: Libreswan pluto daemon denial of service in IKEv2 fragmentation](https://junglewise.ai/threats/cve-2026-12413-libreswan-pluto-daemon-denial-of-service-in-ikev2-fragmentation) (high, CVSS 7.5, published 2 Jul 2026)

## Most severe The Libreswan Project Libreswan vulnerabilities

- [CVE-2026-50722: Libreswan signature verification bypass and DoS in IKEv2 AUTH payload](https://junglewise.ai/threats/cve-2026-50722-libreswan-signature-verification-bypass-and-dos-in-ikev2-auth) (high, CVSS 8.1, published 2 Jul 2026)
- [CVE-2026-50721: Libreswan improper signature verification in IKEv1 RSA authentication](https://junglewise.ai/threats/cve-2026-50721-libreswan-improper-signature-verification-in-ikev1-rsa) (high, CVSS 8.1, published 2 Jul 2026)
- [CVE-2026-14957: Libreswan add_decoded_cert assertion failure in FIPS mode](https://junglewise.ai/threats/cve-2026-14957-libreswan-add-decoded-cert-assertion-failure-in-fips-mode) (high, CVSS 7.5, published 2 Sep 2026)
- [CVE-2026-12413: Libreswan pluto daemon denial of service in IKEv2 fragmentation](https://junglewise.ai/threats/cve-2026-12413-libreswan-pluto-daemon-denial-of-service-in-ikev2-fragmentation) (high, CVSS 7.5, published 2 Jul 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 1 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "The Libreswan Project Libreswan vulnerabilities", https://junglewise.ai/threats/technologies/libreswan, 9 November 2026.