CVE-2026-50751: Check Point Security Gateway Improper Authentication Vulnerability
- Is it exploited?
Yes. CISA added it to the Known Exploited Vulnerabilities catalog on , the same day the CVE record was published.
- How likely is exploitation in the next 30 days?
- 85.3%
EPSS score, percentile 99.7 of all scored records
- How severe?
- 9.3 Critical
CVSS v3.1 base score, from CISA's enrichment of the record
- What should I do?
CISA deadline . Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
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 Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of ; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of ; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of . About the data.
What to do
Required action, set by CISA
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA due date for this action: .
Advisories and patches
The CVE record links no vendor advisory, patch or mitigation.
Linked from CISA's catalog entry
- https://blog.checkpoint.com/security/check-point-releases-important-hotfix-for-vulnerabilities-in-deprecated-ikev1-vpn-protocol/
- https://support.checkpoint.com/results/sk/sk185033?_gl=1*1wqeqhc*_gcl_au*MTI1MzE5MjI2LjE3ODA5MzQ1NTM
- https://nvd.nist.gov/vuln/detail/CVE-2026-50751
Affected products and versions
As listed in the CVE record.
| 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 V5 (CVE Program), cve_2026-10-28_0000Z, as of . About the data.
About this vulnerability
Check Point Security Gateway contains an improper authentication vulnerability in IKEv1 key exchange that could allow an unauthenticated remote attacker to bypass user authentication and establish a remote access VPN connection without a valid user password.
Summary: CISA's KEV catalog, as of .
- CISA added CVE-2026-50751 to its Known Exploited Vulnerabilities (KEV) catalog on 8 Jun 2026.
- CISA marks it as known to be used in ransomware campaigns.
- The due date CISA sets for the required action is 11 Jun 2026.
- The CVE record was published on 8 Jun 2026, the same day it was added to KEV.
- The CVE record carries a CVSS v3.1 base score of 9.3 (Critical), taken from CISA's enrichment of the record.
- FIRST's EPSS model puts the probability of exploitation in the next 30 days at 85.3% (percentile 99.7), as of 28 Oct 2026.
- CISA's SSVC assessment in the CVE record: exploitation active, automatable yes, technical impact total.
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of ; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of ; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of . About the data.
Description
User Authentication Bypass in VPN Remote Access and Mobile Access
A logic flow weakness in Remote Access and Mobile Access certificate validation in deprecated IKEv1 key exchange allows an unauthenticated remote attacker to bypass user authentication and establish a remote access VPN connection without a valid user password.
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of . About the data.
Weakness
- CWE-287: Improper Authentication.
CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record and the KEV entry.
Timeline
| Date | Event |
|---|---|
| CVE record published | |
| Added to CISA KEV | |
| CISA due date for the required action | |
| CVE record last updated |
References
More 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-2024-24919: Check Point Quantum Security Gateways Information Disclosure Vulnerability