CVE-2026-85102
CVE-2026-85102 is a security flaw in Check Point products. Attackers can run their own code on Check Point products from anywhere, without logging in. The US Cybersecurity and Infrastructure Security Agency (CISA) added it to its catalog of flaws known to be used in attacks on 22 Sep 2026.[1]
Check Point products is business software or equipment. Most families won’t have it, but attackers break into it to get inside companies, and from there to what those companies hold about their customers, patients and staff. Check Point has published a fix or advice.
Description
CISA calls it an improper certificate validation in Check Point Multiple Products. In its words: “Check Point Security Gateway and Check Point Spark Firewall using Site to Site VPN or Remote Access VPN contain an improper certificate validation vulnerability which could allow an unauthenticated remote attacker to execute arbitrary code on the Gateway.”[1]
The underlying weakness is CWE-295, in MITRE’s list of common software weaknesses.[2]
It scores 9.8 out of 10 on the Common Vulnerability Scoring System, which rates it critical, scored by the organisation that published the CVE using CVSS 3.1.[2]
Affected versions
NVD’s record doesn’t list version ranges for it; Check Point’s advisory has them[3]. CISA names the product as Check Point Multiple Products.
Most families won’t have Check Point products; it’s for whoever looks after IT at work.
Exploitation
CISA added it to its catalog of known exploited vulnerabilities on 22 Sep 2026, 13 days after it was made public. CISA lists a flaw only when it has reliable evidence of it being exploited, and gave US federal agencies until 25 Sep 2026 to fix it.[1]
FIRST’s Exploit Prediction Scoring System, which estimates how likely a flaw is to be used in attacks in the next 30 days from what it sees across the internet, puts it at 54%. That’s in the top 1% of the flaws it scores.[4]
CISA assesses it as automatable: attackers can run it against many targets at once.
CISA doesn’t say who was attacked, or how.
Fix
Check Point has published a fix or advice.[3] CISA’s required action: “Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes).”[1]
- Check whether you use it.Check Point products is business software or equipment, so most families won’t have it. If you run a business, or work from home on company equipment, ask whoever looks after your IT.
- Send this page to your IT person.Ask them to confirm it’s fixed, or not in use. CISA gave US government agencies until 25 Sep 2026 to fix it.
- If it can’t be fixed, take it offline.CISA’s advice when there’s no fix is to stop using the product, or take it off the internet, until there is one.
You can’t fix someone else’s server, but you can watch for what follows a break-in like this: a breach notice, a password reset you didn’t ask for, or a scam message that knows things it shouldn’t. HARD watches for those for you and your family.
Timeline
| Date | Event |
|---|---|
| The flaw is made public in the National Vulnerability Database, with a severity score of 9.8.[2] | |
| CISA adds it to its catalog of flaws known to be used in attacks.[1] | |
| CISA’s deadline for US government agencies to fix it.[1] | |
| FIRST puts the odds of it being used in attacks in the next 30 days at 54%.[4] |
See also
Other Check Point products flaws
- CVE-2026-93616: path traversal ·
Other Check Point flaws
- CVE-2026-16232, Check Point SmartConsole: improper authentication ·
- CVE-2026-50751, Check Point Security Gateway: improper authentication ·
- CVE-2024-24919, Check Point Quantum Security Gateways: information disclosure ·
Similar flaws
- CVE-2023-41991, Apple devices: improper certificate validation ·
- CVE-2023-20963, Android Framework: privilege escalation ·
- CVE-2022-26923, Microsoft Active Directory: domain services privilege escalation ·
- CVE-2020-0601, Microsoft Windows: cryptoAPI spoofing ·
Added the same day
- CVE-2026-94127, F5 BIG-IP APM: heap-based buffer overflow ·
- CVE-2026-93952, Arista VeloCloud Orchestrator: improper input validation ·
- CVE-2026-93616, Check Point products: path traversal ·
Every Check Point flaw on CISA’s list · Everything added in September 2026
References
- ^ Cybersecurity and Infrastructure Security Agency. “Check Point Multiple Products Improper Certificate Validation Vulnerability”. Known Exploited Vulnerabilities Catalog, added 22 Sep 2026.
- ^ National Institute of Standards and Technology. “CVE-2026-85102 Detail”. National Vulnerability Database, published 9 Sep 2026.
- ^ Check Point. Advisories and fixes: support.checkpoint.com, blog.checkpoint.com.
- ^ FIRST. “Exploit Prediction Scoring System”. EPSS 0.541, percentile 99.0, 31 Oct 2026.
- CVE Program. “CVE-2026-85102”. The official CVE record.
This article is built from CISA’s catalog (version 2026.10.30), NVD’s record and FIRST’s scores, kept in HARD’s database and checked every morning. The plain English is HARD’s.