CVE-2026-85103 | BDVDB-2026-370768 Detail

checkpointQuantum Security Gateway

Description#

A heap-based buffer overflow in VPN certificate ASN.1 decoding may allow an unauthenticated remote attacker to execute arbitrary code on Check Point Quantum Security Management and Quantum Security Gateway systems.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.

Weaknesses#

CWE-122 Heap-based Buffer Overflow

References#

https://support.checkpoint.com/results/sk/sk1000118

Exploit#

No public exploit known

History#

Version 12026-09-09Record published in the CVE List.
Version 22026-09-10Most recent update recorded in the CVE List.

Published

Published: 2026-09-09
Last modified: 2026-09-10

Vendor information

Vendor: checkpoint
Product: Quantum Security Gateway

All checkpoint vulnerabilities

Score

9.8 Critical

EPSS

4.2%, Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 91.2.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Memory Corruption

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
R82.10 with Jumbo Hotfix Take 43 or below
Fixed
Not stated
Vulnerable
R82 with Jumbo Hotfix Take 125 or below
Fixed
Not stated
Vulnerable
R81.20 with Jumbo Hotfix Take 165 or below
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

9.8 Critical

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).