CVE-2023-49936Network attack vector

Service crash via size_valp NULL dereference

Published Dec 14, 2023 · Updated Nov 4, 2025

NULL pointer dereference in SchedMD Slurm 22.05.x, 23.02.x, and 23.11.x allows remote attackers to crash an affected daemon. Slurm fails to reject an overflowing size_valp value and dereferences the resulting NULL pointer. No authentication or user interaction is required, and successful exploitation interrupts the affected Slurm service without disclosed data access or modification.

CVSS severity7.5
High
EPSS probability1.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in SchedMD Slurm 22.05.x, 23.02.x, and 23.11.x allows remote attackers to crash an affected daemon. Slurm fails to reject an overflowing size_valp value and dereferences the resulting NULL pointer. No authentication or user interaction is required, and successful exploitation interrupts the affected Slurm service without disclosed data access or modification.

The record

CVE
CVE-2023-49936
Published
Dec 14, 2023
Updated
Nov 4, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8SUSECVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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