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CVE-2026-50752
Certificate Validation Bypass in VPN Site-to-Site Connections Using IKEv1
High7.4EPSS 4.7%
- Published
- Updated
- Reserved
- Assigned by
- checkpoint
Description
A weakness in the certificate validation logic of the deprecated IKEv1 key exchange may allow an unauthenticated attacker positioned as a man-in-the-middle to bypass certificate validation in VPN site-to-site connections that use certificate-based authentication. Successful exploitation could allow interception or modification of traffic traversing the VPN tunnel.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| checkpointCNA (assigner) | 3.1 | High7.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
| NVDNVD · Awaiting Analysis | 3.1 | High7.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
- EPSS (exploitation in 30 days)
- 4.7% · top 8.1% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.4.
Weakness
Affected products
checkpoint · Quantum Security Gateway
- affected R82.10 with Jumbo Hotfix Take 19 or below
- affected R82 with Jumbo Hotfix Take 103 or below
- affected R81.20 with Jumbo Hotfix Take 141 or below
- affected R81.10, R81, and R80.40
- affected R80.20.X, R81.10.X, and R82.00.X
References (1)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-50752)Record last updated .