Vulnerability · Published Sep 16, 2026 · Assigned by checkpoint
CVE-2026-91843Stack overflow in login process to the Security Management and Log Servers
Critical 9.8
In plain English
A critical-severity stack buffer overflow in Quantum Security Management from checkpoint. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.5%top 55.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC
Official description
A stack overflow during the unauthenticated login process may allow an attacker to run arbitrary code remotely with root privileges.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| checkpoint | Quantum Security Management | R82.10 with Jumbo Hotfix Take 44 or belowR82 with Jumbo Hotfix Take 126 or belowR81.20 with Jumbo Hotfix Take 166 or belowR81.10 (EOS) with Jumbo Hotfix Take 190 or belowR81 (EOS)R80.40 (EOS)R80.30 (EOS)R80.20 (EOS) |
Weakness: CWE-121 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H