CVE-2018-1243: iDRAC6/iDRAC7/iDRAC8 - Weak CGI session ID vulnerability

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-07-02 · updated 2026-06-17
Weakness: CWE-358

Description

Dell EMC iDRAC6, versions prior to 2.91, iDRAC7/iDRAC8, versions prior to 2.60.60.60 and iDRAC9, versions prior to 3.21.21.21, contain a weak CGI session ID vulnerability. The sessions invoked via CGI binaries use 96-bit numeric-only session ID values, which makes it easier for remote attackers to perform bruteforce session guessing attacks.

Affected products

Dell Idrac6 Firmware: before 2.91 — fixed in 2.91
Dell Idrac7 Firmware: before 2.60.60.60 — fixed in 2.60.60.60
Dell Idrac8 Firmware: before 2.60.60.60 — fixed in 2.60.60.60
Dell EMC iDRAC: before 3.21.21.21 — fixed in 3.21.21.21

How to fix

Upgrade to a fixed version: Dell Idrac6 Firmware 2.91; Dell Idrac7 Firmware 2.60.60.60; Dell Idrac8 Firmware 2.60.60.60; Dell EMC iDRAC 3.21.21.21. Check the vendor advisory for mitigations.

References

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