CVE-2026-93433

Local process crash via unbounded VPD length

Published Sep 21, 2026 · Updated Sep 21, 2026

Stack buffer overflow in libstoragemgmt allows local users controlling a storage device to crash a serial-number query process. The _sg_parse_vpd_80() function trusts the length field in SCSI VPD page 0x80 while copying serial-number data into a stack buffer. The attacker must control a local or virtual SCSI device; the documented consequence is process instability or a crash, not data access.

CVSS severity5.5
Medium
EPSS probability0.15%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack buffer overflow in libstoragemgmt allows local users controlling a storage device to crash a serial-number query process. The _sg_parse_vpd_80() function trusts the length field in SCSI VPD page 0x80 while copying serial-number data into a stack buffer. The attacker must control a local or virtual SCSI device; the documented consequence is process instability or a crash, not data access.

The record

CVE
CVE-2026-93433
Published
Sep 21, 2026
Updated
Sep 21, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-121, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 21, 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 buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/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.

Activity data is delayed. The latest report is Sep 28, 2026.

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No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1499Endpoint Denial of Service

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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