CVE-2013-4783
CVE-2013-4783 is a critical-severity vulnerability in Dell Idrac6 Bmc with a CVSS 2.0 base score of 10.0. 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-287.
Key facts
- Severity: Critical (CVSS 2.0 base score 10.0)
- EPSS exploit prediction: 3% (87th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-287
- Affected product: Dell Idrac6 Bmc
- Published:
- Last modified:
Description
The Dell iDRAC6 with firmware 1.x before 1.92 and 2.x and 3.x before 3.42, and iDRAC7 with firmware before 1.23.23, allows remote attackers to bypass authentication and execute arbitrary IPMI commands by using cipher suite 0 (aka cipher zero) and an arbitrary password. NOTE: the vendor disputes the significance of this issue, stating "DRAC's are intended to be on a separate management network; they are not designed nor intended to be placed on or connected to the Internet."
Frequently asked questions
- What is CVE-2013-4783?
- The Dell iDRAC6 with firmware 1.x before 1.92 and 2.x and 3.x before 3.42, and iDRAC7 with firmware before 1.23.23, allows remote attackers to bypass authentication and execute arbitrary IPMI commands by using cipher suite 0 (aka cipher zero) and an arbitrary password. NOTE: the vendor disputes the significance of this issue, stating "DRAC's are intended to be on a separate management network; they are not designed nor intended to be placed on or connected to the Internet."
- How severe is CVE-2013-4783?
- CVE-2013-4783 has a CVSS 2.0 base score of 10.0, rated critical severity.
- Is CVE-2013-4783 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2013-4783?
- CVE-2013-4783 affects Dell Idrac6 Bmc. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2013-4783?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2013-4783 published?
- CVE-2013-4783 was published on 2013-07-08 and last updated on 2026-06-16.
References
- ftp://ftp.dell.com/Manuals/Common/integrated-dell-remote-access-cntrllr-6-for-monolithic-srvr-v1.95_FAQ2_en-us.pdf
- http://en.community.dell.com/techcenter/systems-management/w/wiki/4929.how-to-check-if-ipmi-cipher-0-is-off.aspx
- http://fish2.com/ipmi/cipherzero.html
- http://osvdb.org/show/osvdb/93039
- http://www.metasploit.com/modules/auxiliary/scanner/ipmi/ipmi_cipher_zero
- http://www.wired.com/threatlevel/2013/07/ipmi/
- https://lists.gnu.org/archive/html/freeipmi-devel/2013-02/msg00013.html
Affected products (1)
- cpe:2.3:h:dell:idrac6_bmc:*:*:*:*:*:*:*:*
Other CWE-287 (Improper Authentication) vulnerabilities
- CVE-2026-45480 — Critical (CVSS 10.0): Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
- CVE-2026-46389 — Critical (CVSS 10.0): UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS…
- CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
- CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
- CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
- CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…
Browse all CWE-287 (Improper Authentication) vulnerabilities →