How severe is CVE-2018-1243?

CVE-2018-1243 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-1243 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-1243?

CVE-2018-1243 primarily affects Dell Idrac6 Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-1243?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-1243 published?

CVE-2018-1243 was published on 2018-07-02 and last updated on 2026-06-17.

CVE-2018-1243

CVE-2018-1243 is a high-severity vulnerability in Dell Idrac6 Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-358.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-358
Affected product: Dell Idrac6 Firmware
Published: 2018-07-02
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2018-1243?: 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.
How severe is CVE-2018-1243?: CVE-2018-1243 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-1243 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-1243?: CVE-2018-1243 primarily affects Dell Idrac6 Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-1243?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-1243 published?: CVE-2018-1243 was published on 2018-07-02 and last updated on 2026-06-17.

References

http://en.community.dell.com/techcenter/extras/m/white_papers/20487494

Affected products (4)

cpe:2.3:o:dell:idrac6_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:idrac7_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:idrac8_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dell:idrac9_firmware:*:*:*:*:*:*:*:*

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