CVE-2026-50751: Check Point Security Gateway Improper Authentication Vulnerability

Q: How do I fix CVE-2026-50751?

gaia os: upgrade to r81.20; gaia embedded: upgrade to r81.10.17, r82.00.10. Exact commands for each OS are on this page.

Q: Is CVE-2026-50751 being exploited?

Yes. CVE-2026-50751 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

Q: What does CVE-2026-50751 affect?

CVE-2026-50751 affects gaia os, gaia embedded. Severity is critical (CVSS 9.3). 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

Q: How urgent is CVE-2026-50751?

Priority 100/100. Critical severity; EPSS top 1%: very likely to be exploited; Exploited in the wild (CISA KEV); Used in ransomware campaigns; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

100

Patch now

CRITICAL 9.3EXPLOITEDREMOTEUPGRADEUPGRADE

CVE-2026-50751 is a critical-severity flaw (CVSS 9.3) affecting gaia os, gaia embedded, reported as exploited in the wild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Critical severity
EPSS top 1%: very likely to be exploited
Exploited in the wild (CISA KEV)
Used in ransomware campaigns
Public exploit reference
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.3 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	85.3% (top 1%)
CISA exploited list	Yes, fix due 2026-06-11, used in ransomware
Weakness	CWE-287
Published	2026-06-08
Last modified	2026-08-04

Publisher (CNA): Check Point Software Technologies Ltd. · Vendor: checkpoint

Last updated 2026-08-04 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-08Exploited Added to the CISA Known Exploited Vulnerabilities list
2026-06-08 12:16 UTCPublished CVE record published
2026-06-11Deadline CISA due date for US federal agencies to patch
2026-08-04 05:16 UTCUpdated Record last modified

checkpoint gaia os UPGRADE

Affected: >= r80.40 and < r81.20 · r81.20 · r81.20 take_10 · r81.20 take_101 · r81.20 take_103 · r81.20 take_105 · r81.20 take_111 · r81.20 take_113

Fixed in: r81.20

Safe to downgrade to: a release before r80.40

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

checkpoint gaia embedded UPGRADE

Affected: >= r80.20.00 and < r81.10.17 · r81.10.17 · r81.10.17 build_996004508 · r81.10.17 build_996004620 · r81.10.17 build_996004653 · r81.10.17 build_996004721 · r81.10.17 build_996004892 · >= r80.20.00 and < r82.00.10

Fixed in: r81.10.17, r82.00.10

Safe to downgrade to: a release before r80.20.00

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Exact fixes by distribution

Fedora 46 · arm-none-eabi-binutils-cs · FIXED · 2.47-1.fc46 · FEDORA-2026-7498616952 · source

sudo dnf upgrade --advisory=FEDORA-2026-7498616952

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: watchtowrlabs/watchTowr-vs-Check-Point-CVE-2026-50751 (7 stars)
GitHub PoC: 0xBlackash/CVE-2026-50751 (2 stars)
GitHub PoC: WadesWeaponShed/CVE-2026-50751-Mitigation-Scripts (1 stars)
Write-up: support.checkpoint.com/results/sk/sk185033
Nuclei scan template: Check Point IKEv1 Remote-Access VPN - Certificate Authentication Bypass

Advisories and coverage

Official advisories

IPA Japan Security Alerts: Check Point Software Technologies製品の脆弱性対策について(CVE-2026-50751) 2026-06-09

Research and news

watchTowr Labs: Marking Your Own Homework (Check Point Remote Access VPN IKEv1 Authentication Bypass CVE-2026-50751) 2026-06-12

Verify at the official source NVD · CVE Program · CISA KEV catalog · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-50751?

gaia os: upgrade to r81.20; gaia embedded: upgrade to r81.10.17, r82.00.10. Exact commands for each OS are on this page.

Is CVE-2026-50751 being exploited?

Yes. CVE-2026-50751 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

What does CVE-2026-50751 affect?

CVE-2026-50751 affects gaia os, gaia embedded. Severity is critical (CVSS 9.3). 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

How urgent is CVE-2026-50751?

Priority 100/100. Critical severity; EPSS top 1%: very likely to be exploited; Exploited in the wild (CISA KEV); Used in ransomware campaigns; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Software pages

Check Point vulnerabilities

Related CVEs

CVE-2026-85102 CRITICAL 9.8 EXPLOITED UPGRADE UPGRADE Check Point Multiple Products Improper Certificate Validation Vulnerability

References

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