User Authentication Bypass in VPN Remote Access and Mobile Access
- Severity
- Critical9.3CVSS 3.1, Critical
- Known exploited
- Known exploitedFederal remediation due date: 11 Jun 2026
- Exploit prediction
- 6%
- Published
- 8 Jun 2026Updated 4 Aug 2026 · Last verified 30 Sept 2026
Known remediation
Fixed releases per branch, as the vendor states them. Patcharo never infers a fix.
Check Point Quantum Security Gateway
Vendor advisory- R82.10Fixed after R82.10 JHF Take 19
- R82Fixed after R82 JHF Take 103
- R81.20Fixed after R81.20 JHF Take 141
- R81.10Listed as affected, no patch-level detail
- R81Listed as affected, no patch-level detail
- R80.40Listed as affected, no patch-level detail
Description
Title, description and vendor guidance are quoted from the source records.
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.
Weakness: CWE-287
Known exploited
Added to CISA KEV on 8 Jun 2026
Federal remediation due date: 11 Jun 2026
Known use in ransomware campaigns
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Exploit prediction
6% probability of exploitation in the next 30 days (percentile 93%).
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
What the source states, per branch
Versions matched by Patcharo
Check Point Quantum Security GatewaySource: Check Point (CVE record)
| Branch | Affected | Fixed in |
|---|---|---|
| R82.10 | R82.10 GA – R82.10 JHF Take 19 | Fixed after R82.10 JHF Take 19 |
| R82 | R82 GA – R82 JHF Take 103 | Fixed after R82 JHF Take 103 |
| R81.20 | R81.20 GA – R81.20 JHF Take 141 | Fixed after R81.20 JHF Take 141 |
| R81.10 | Listed as affected, no patch-level detail | |
| R81 | Listed as affected, no patch-level detail | |
| R80.40 | Listed as affected, no patch-level detail |
Versions not listed are not assessed (shown as Unknown).
Affected products
- checkpoint Spark Firewalls · R80.20.X, R81.10.X, and R82.00.X
References
- https://support.checkpoint.com/results/sk/sk185033(opens in a new tab)
- https://blog.checkpoint.com/security/check-point-releases-important-hotfix-for-vulnerabilities-in-deprecated-ikev1-vpn-protocol/(opens in a new tab)
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-50751(opens in a new tab)
Provenance
Every fact on this page comes from the sources below. Nothing is written by an AI.
- Check Point (CVE record)
- Check Point (CVE record) · 30 Sept 2026 at 00:17 UTC · Parser patcharo-cve5/1.1.0
- CISA Known Exploited Vulnerabilities
- CISA Known Exploited Vulnerabilities · 30 Sept 2026 at 00:17 UTC · Parser patcharo-kev/1.0.0
- NVD
- NVD · 28 Sept 2026 at 07:02 UTC · Parser patcharo-nvd/1.0.0
- FIRST EPSS
- FIRST EPSS · 30 Sept 2026 at 00:17 UTC · Parser patcharo-epss/1.0.0
Last verified: 30 Sept 2026 at 00:17 UTC