CVE-2026-50752: Certificate Validation Bypass in VPN Site-to-Site Connections Using IKEv1
- Is it exploited?
Reported, not confirmed by CISA. VulnCheck KEV lists it as exploited in the wild. CISA has not added it to its Known Exploited Vulnerabilities catalog as of .
VulnCheck KEV lists it since . It cites 2 public reports, the first from .
- How likely is exploitation in the next 30 days?
- 5%
Up from 0.3% on .
EPSS score, percentile 92.2 of all scored records. A probability estimated by FIRST, not a report of exploitation.
- How severe?
- 7.4 High
CVSS v3.1 base score, given by the CNA
- What should I do?
CISA has set no required action, because the vulnerability is not in KEV.
The CVE record links no vendor advisory, patch or mitigation.
- Which versions are affected?
Affected
- R82.10 with Jumbo Hotfix Take 19 or below
- R82 with Jumbo Hotfix Take 103 or below
- R81.20 with Jumbo Hotfix Take 141 or below
- R81.10, R81, and R80.40
- R80.20.X, R81.10.X, and R82.00.X
Source: CISA KEV 2026.10.29, as of ; VulnCheck KEV, as of ; FIRST EPSS, as of ; CVE List, as of . About the data.
Description
Certificate Validation Bypass in VPN Site-to-Site Connections Using IKEv1
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.
Source: CVE List, as of . About the data.
What to do
Advisories and patches
The CVE record links no vendor advisory, patch or mitigation.
This summary is based on the CVE record as of . Check the vendor's advisory before you act: affected versions and fixes can change.
Affected products and versions
Versions by product, as listed in the CVE record (2 products)
| Status | Versions |
|---|---|
| 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 |
| Status | Versions |
|---|---|
| Affected | R80.20.X, R81.10.X, and R82.00.X |
Source: CVE List, as of . About the data.
Weakness
CWE-295
- CWE-295: Improper Certificate Validation.
CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record.
Timeline
| Date | Event |
|---|---|
| CVE record published | |
| CVE record last updated |
References
1
Known exploited Check Point vulnerabilities
- CVE-2026-85102: Check Point Multiple Products Improper Certificate Validation Vulnerability
- CVE-2026-93616: Check Point Multiple Products Path Traversal Vulnerability
- CVE-2026-16232: Check Point SmartConsole Improper Authentication Vulnerability
- CVE-2026-50751: Check Point Security Gateway Improper Authentication Vulnerability
- CVE-2024-24919: Check Point Quantum Security Gateways Information Disclosure Vulnerability