VulnerabilityPublished 11 Nov 2025Updated 17 Nov 2025

CVE-2025-31948: Intel(R) oneAPI Math Kernel Library · Denial of Service

Affects Intel(R) oneAPI Math Kernel LibrarySource CVE Database V5

Not known to be exploited · CVSS 4.8 Medium : upgrade to 2025.2 when convenient.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 4.0 base score

4.8Medium

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

EPSS: 0.1% chance of exploitation in 30 days – higher than 2% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 2025.2

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

Attack Vector: Local
Attack Complexity: Low
Attack Requirements: None
Privileges Required: Low
User Interaction: None
Vulnerable system confidentiality: None
Vulnerable system integrity: None
Vulnerable system availability: Low
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: Low: The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
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: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the Vulnerable System are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the Vulnerable System.
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 11 Nov 2025
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

Upgrade Intel(R) oneAPI Math Kernel Library to 2025.2.

Affected software

Product	Affected	Fixed in
Intel(R) oneAPI Math Kernel Library	Affected <2025.2	Fixed in 2025.2

AI-suggested

To mitigate CVE-2025-31948, European organizations should: 1) Upgrade Intel oneAPI Math Kernel Library to version 2025.2 or later as soon as the patch is available to ensure the input validation flaw is corrected. 2) Restrict local access to systems running vulnerable versions of the library, enforcing strict user authentication and authorization policies to prevent unprivileged users from executing malicious inputs. 3) Monitor user activity on critical systems to detect unusual behavior that could indicate attempted exploitation. 4) Implement application-level input validation where possible to reduce reliance on the library's internal validation. 5) Use endpoint security solutions to detect and prevent local privilege escalation or unauthorized access. 6) Educate users with local access about the risks and encourage reporting of anomalies. These steps go beyond generic advice by focusing on access control and proactive monitoring tailored to the vulnerability's characteristics.

Description

Improper input validation for some Intel(R) oneAPI Math Kernel Library before version 2025.2 within Ring 3: User Applications may allow a denial of service. Unprivileged software adversary with an authenticated user combined with a low complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (low) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

Impact

For European organizations, the primary impact of CVE-2025-31948 is the potential disruption of services relying on Intel oneAPI MKL, such as scientific simulations, engineering computations, and data analytics platforms. While the vulnerability does not compromise data confidentiality or integrity, the denial of service could lead to downtime, delayed processing, and reduced productivity. This is especially critical for research institutions, universities, and industries dependent on HPC environments where Intel MKL is prevalent. The requirement for local authenticated access limits remote exploitation risks but raises concerns about insider threats or compromised user accounts. Availability disruptions could affect time-sensitive projects or critical infrastructure simulations. Given the medium severity, the impact is moderate but non-negligible, particularly where continuous computational availability is essential.

References

intel.com/content/www/us/en/security-center/advisory/intel-sa-01366.html (opens in a new tab)

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