VulnerabilityPublished 14 Aug 2024Updated 3 Nov 2025

CVE-2023-34424: Intel(R) CSME · Denial of Service

Affects Intel(R) CSMESource CVE Database V5

Not known to be exploited · CVSS 6.7 Medium.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 4.0 base score

6.7Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Attack Vector: Local
Attack Complexity: Low
Attack Requirements: None
Privileges Required: High
User Interaction: None
Vulnerable system confidentiality: None
Vulnerable system integrity: None
Vulnerable system availability: High
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Local: The vulnerable system is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or through terminal emulation (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., using social engineering techniques to trick a legitimate user into opening a malicious document).
Attack Complexity: Low: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: High: The attacker requires privileges that provide significant (e.g., administrative) control over the vulnerable system allowing full access to the vulnerable system’s settings and files.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system confidentiality: None: There is no loss of confidentiality within the Vulnerable System.
Vulnerable system integrity: None: There is no loss of integrity within the Vulnerable System.
Vulnerable system availability: High: There is a total loss of availability, resulting in the attacker being able to fully deny access to resources in the Vulnerable System; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the Vulnerable System (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 14 Aug 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

AI-suggested

Monitor Intel's official security advisories and promptly apply firmware updates or patches addressing CVE-2023-34424 as they become available.
Implement strict privileged access controls to limit the number of users with elevated local privileges, reducing the risk of exploitation.
Employ endpoint detection and response (EDR) solutions capable of monitoring unusual firmware or system behavior indicative of exploitation attempts.
Conduct regular audits of local user privileges and remove unnecessary elevated access rights.
Use hardware-based security features such as Intel Boot Guard and Trusted Platform Module (TPM) to enhance platform integrity and detect unauthorized firmware modifications.
Incorporate firmware integrity checks into routine security assessments to identify potential tampering or anomalies.
Educate system administrators about the risks of firmware vulnerabilities and the importance of applying updates promptly.
In high-security environments, consider isolating critical systems or employing virtualization/containerization to limit the impact of local DoS conditions.

Description

Improper input validation in firmware for some Intel(R) CSME may allow a privileged user to potentially enable denial of service via local access.

Impact

For European organizations, the primary impact of CVE-2023-34424 is on system availability due to the potential for denial of service triggered by a privileged local user. This could disrupt critical business operations, especially in environments relying heavily on Intel-based hardware with CSME firmware, such as data centers, enterprise workstations, and government systems. Although the vulnerability does not compromise data confidentiality or integrity, the loss of availability can result in operational downtime, reduced productivity, and potential financial losses. In sectors with stringent uptime requirements—such as finance, healthcare, and critical infrastructure—the impact could be more pronounced. Additionally, organizations with less mature internal access controls may face higher risk since exploitation requires privileged local access. The absence of known exploits in the wild reduces immediate risk but does not eliminate the threat, especially if attackers develop tools targeting this vulnerability. Firmware-level vulnerabilities are challenging to detect and mitigate without vendor patches, increasing the importance of timely updates and robust privileged access management.

References

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Exploitation evidence

What to do

Description

AI analysisMachine-generated, updated 3 Nov 2025, 23:53 UTC

Technical details

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