critical Known exploitedREV. 01

CVE-2026-50751Check Point Security Gateway — IKEv1 login flaw on remote access

A logic flaw in certificate handling during the deprecated IKEv1 key exchange lets an unauthenticated attacker set up a remote-access virtual private network (VPN) session on Check Point gateways with no user password at all.

YOUR NEXT MOVE

Apply Check Point's hotfix from sk185033 now; where IKEv1 is not required, move remote access to IKEv2 and review session logs for logins with no password.

Read the risk

THE VITAL STATS
CVSS score
9.3/ 10
CVSS v3.1
EPSS probability
84%
Likelihood of exploitation
Attack complexity
Low
Conditions needed to exploit
Known exploited
Yes — CISA KEV
CVE published
2026-06-08
Added to KEV
2026-06-08
Exploit published
Not recorded
Confidence
high
Kill chain
initial access
MITRE ATT&CK
T1078
Severity
critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N

Attacker needsNetwork reach to a gateway offering remote-access or mobile-access VPN over the deprecated IKEv1 exchange.

Behind the card

4 REFERENCES
Field-level provenanceTRACE THE SOURCES +

Which source supports each field, when it was retrieved, and who extracted it.

FieldsSourceRetrievedExtractorConfidence
cvss, exploitation.attack_complexity, exploitation.exploit_available, references, published_atnvd.nist.gov2026-09-24scrty-crds-pipeline/0.1high
exploitation.known_exploited, exploitation.kev_addedcisa.gov2026-09-24scrty-crds-pipeline/0.1high
epssapi.first.org2026-09-24scrty-crds-pipeline/0.1high
title, summary, severity, remediation, mitre_attack, kill_chain, recommended_action, confidence, tags, exploitation.prerequisitesnvd.nist.gov2026-09-24claude-codehigh

Printing history

THE RECORD
  1. r1Initial base card

First printing. This card has not been reprinted since publication.

crds:cve-2026-50751 · CRDS 0.1 · Issued 2026-09-24