CVE Intelligence
CISA KEV Critical Authentication

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

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.

Published Jun 8, 2026 · Updated Oct 13, 2026 · Sources: CISA Known Exploited Vulnerabilities, NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · CNA: checkpoint

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

CISA KEV · Jun 8, 2026 R used by ransomware (CISA) Detection templates (Nuclei) · 1Proofs of concept on GitHub · 8
How the score was calculated
  • Confirmed exploitation (CISA KEV)+35
  • Used in ransomware campaigns (CISA)+10
  • Public exploit/PoC (nuclei, github)+10
  • EPSS 85.3% (30-day exploitation probability)+15
  • Technical severity (critical)+10
  • Automatable exploitation (SSVC)+3

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation
Confirmed
CISA KEV, listed Jun 8, 2026
EPSS FIRST
85.34%
ahead of 100% of scored CVEs · Oct 14, 2026
Affects
Checkpoint
Gaia Embedded and 3 more
CVSS base
9.3
Critical · 3 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation
Active
none · proof-of-concept · active
Automatable
Yes
can an attacker script the kill-chain steps
Technical impact
Total
partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

CISA required action 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.

US federal deadline: Jun 11, 2026 — passed 126 day(s) ago

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

  1. Identify exposed assets running the affected vendor/product/version combinations (Checkpoint Gaia Embedded, Checkpoint Gaia Os, Checkpoint Quantum Security Gateway…).
  2. Treat as emergency remediation: the CVE is in CISA KEV (confirmed exploitation).
  3. The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
  4. Apply the fixed version or the patch documented under Remediation.
  5. EPSS ahead of 100% of scored CVEs: prioritize it in the patch queue.
  6. Search available logs for exploit probes matching the vulnerability class (authentication), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

VendorProductVersionsStatusSource
Checkpoint Gaia Embedded version r82.00.10-build_998002203≥ r80.20.00 and < r81.10.17version r81.10.17version r81.10.17-build_996004508version r81.10.17-build_996004620version r81.10.17-build_996004653version r81.10.17-build_996004721version r81.10.17-build_996004892
and 7 more version r82.00.10version r82.00.10-build_998001559version r82.00.10-build_998001562version r82.00.10-build_998002110version r82.00.10-build_998002112version r82.00.10-build_998002133≥ r80.20.00 and < r82.00.10
Vulnerable NIST National Vulnerability Database
Checkpoint Gaia Os version r82-take_34version r82-take_33version r82-take_25version r82-take_19version r82-take_18version r82-take_14version r82-take_12version r82-take_103
and 50 more version r82-take_10version r81.20version r82version r82-take_36version r82-take_39version r82-take_41version r82-take_43version r82-take_44version r82-take_60version r82-take_73version r82-take_91version r82.10version r82.10-take_19version r82.10-take_6version r81.20-take_118version r81.20-take_24version r81.20-take_141version r81.20-take_14version r81.20-take_127version r81.20-take_126version r81.20-take_122version r81.20-take_120version r81.20-take_119version r81.20-take_98version r81.20-take_115version r81.20-take_113version r81.20-take_111version r81.20-take_105version r81.20-take_103version r81.20-take_101version r81.20-take_10≥ r80.40 and < r81.20version r81.20-take_38version r81.20-take_99version r81.20-take_96version r81.20-take_92version r81.20-take_90version r81.20-take_89version r81.20-take_84version r81.20-take_8version r81.20-take_79version r81.20-take_76version r81.20-take_70version r81.20-take_65version r81.20-take_54version r81.20-take_53version r81.20-take_45version r81.20-take_43version r81.20-take_41version r81.20-take_26
Vulnerable NIST National Vulnerability Database
Checkpoint Quantum Security Gateway version R82.10 with Jumbo Hotfix Take 19 or belowversion R82 with Jumbo Hotfix Take 103 or belowversion R81.20 with Jumbo Hotfix Take 141 or belowversion R81.10, R81, and R80.40 Vulnerable CVE Program (cve.org) e CISA ADP
Checkpoint Spark Firewalls version R80.20.X, R81.10.X, and R82.00.X Vulnerable CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
None

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

ScoreVersionSeverityExpl.ImpactScored by
9.3 CVSS 3.1 Critical 3.9 4.7 134c704f-9b21-4f2e-91b3-4a467353bcc0 via NIST National Vulnerability Database
9.3 CVSS 3.1 Critical — — GitHub, Inc. via GitHub Security Advisories
9.3 CVSS 3.1 Critical — — CISA-ADP via CVE Program (cve.org) e CISA ADP
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N (score shown at the top: 134c704f-9b21-4f2e-91b3-4a467353bcc0)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-287 · Improper Authentication

Other CVEs with this weakness →

CISA KEV details CISA

CISA lists a CVE once it has evidence of exploitation against real targets.

Listed
Jun 8, 2026
Federal deadline
Jun 11, 2026
passed 126 day(s) ago
Ransomware use
Known

CISA records ransomware use only for campaigns it has confirmed, so “Unknown” means unrecorded, not ruled out. The deadline binds US federal agencies; for everyone else it is a reference date.

Public exploits, PoCs and detection templates

Public code that demonstrates or tests the flaw raises the odds of mass exploitation — and Nuclei templates help find vulnerable assets in your environment.

Detection templates (Nuclei)
Proofs of concept on GitHub

Warning: public PoCs are sometimes disguised malware. Use them only for authorized testing in an isolated environment. This portal does not host exploit code — it only points to the sources.

EPSS over time FIRST

Oct 12, 2026 → Oct 14, 2026 · 3 reading(s) · max 85.34%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

  • Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
  • Review authentication logs: logins without MFA, anomalous sessions and recently created accounts.
  • Hunt retroactively in logs from before Jun 8, 2026 (KEV listing): exploitation may have started earlier.
web/proxy/WAF logsnetwork IDS/IPSauthentication logs

Timeline

What happened to this CVE, newest first.

  • 2026
  • Affected products added · checkpoint/quantum security gateway, checkpoint/spark firewalls
    Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
  • SSVC assessment updated
    Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
  • Record published
    Oct 13, 2026
  • Fix documented
    Oct 13, 2026 · NIST National Vulnerability Database
  • Affected products added · checkpoint/gaia os, checkpoint/gaia embedded
    Oct 13, 2026 · NIST National Vulnerability Database
  • CVSS changed · 9.3
    Oct 13, 2026 · NIST National Vulnerability Database
  • Source status changed · → Analyzed
    Oct 13, 2026 · NIST National Vulnerability Database
  • Added to CISA KEV (detected)
    Oct 13, 2026 · CISA Known Exploited Vulnerabilities
  • Record created in this database
    Oct 13, 2026 · CISA Known Exploited Vulnerabilities
  • CVE published
    Jun 8, 2026 · checkpoint
  • Added to CISA KEV catalog
    Jun 7, 2026 · CISA

Source activity

Repeated readings are counted rather than listed.

  • 2× References added · Oct 13, 2026 – Oct 13, 2026
  • 1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

6 on the record

Elsewhere on this site

Checkpoint
every CVE for this vendor
2026-06
what else CISA listed that month
Authentication
same class
CWE-287
other pages naming this weakness

Related CVEs (same products)

  • CVE-2026-85102 Check Point Multiple Products Improper Certificate Validation Vulnerability KEV Sep 9, 2026
  • CVE-2026-50752 Certificate Validation Bypass in VPN Site-to-Site Connections Using IKEv1 Jun 8, 2026
  • CVE-2026-48135 HTTP service can incorrectly process malformed HTTP requests May 26, 2026
  • CVE-2026-48132 VPN service may restart unexpectedly when processing IKE traffic over NAT-T 4500/UDP May 26, 2026
  • CVE-2026-48134 SQL injection issue in UserCheck Portal when DLP Software Blade is active May 26, 2026
  • CVE-2026-48131 VPND IKE Fragment Reassembly - Heap Out-of-Bounds Write via Sequence Number Zero May 26, 2026

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

  • No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
  • No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
  • No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-50751 is "Check Point Security Gateway Improper Authentication Vulnerability", rated Critical. It affects Gaia Embedded (Checkpoint); versions are in the scope table. It is in CISA KEV: there is evidence of real-world exploitation. CVSS 9.3 describes technical severity. EPSS 85.34% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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