CVE-2026-73583Hinoki check available

Local service crash via malformed OperationHdr parsing

Published Aug 13, 2026 · Updated Aug 13, 2026

Out-of-bounds read in sblim-sfcb on Red Hat Enterprise Linux 7 through 10 allows local users to crash the provider-manager process. The provider-manager IPC parser deserializes a malformed OperationHdr without adequate bounds validation, causing an out-of-bounds memory read and process termination. Exploitation requires local access to the connect socket and permission to obtain the internal provider-manager descriptor; resulting disclosure is limited to unintended process memory.

CVSS severity6.6
Medium
EPSS probability0.09%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
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Summary

What happened

Out-of-bounds read in sblim-sfcb on Red Hat Enterprise Linux 7 through 10 allows local users to crash the provider-manager process. The provider-manager IPC parser deserializes a malformed OperationHdr without adequate bounds validation, causing an out-of-bounds memory read and process termination. Exploitation requires local access to the connect socket and permission to obtain the internal provider-manager descriptor; resulting disclosure is limited to unintended process memory.

The record

CVE
CVE-2026-73583
Published
Aug 13, 2026
Updated
Aug 13, 2026
Vendor
389 Directory Server
Product
Red Hat Enterprise Linux 10
Classifications
CWE-125, T1489
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 13, 2026Record 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 versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

389 Directory Server · Red Hat Enterprise Linux 10Affected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 7Affected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 9Affected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 8Affected versions are unavailable in this record.

Published CVSS scores

6.6Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1489Service Stop

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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