CVE-2022-27879

Privileged information disclosure via improper buffer restrictions

Published Aug 11, 2023 · Updated Feb 13, 2025

Improper buffer restrictions in Intel processor BIOS firmware allow local users with privileged access to disclose information. Intel has not published the affected firmware routine, the buffer operation, or the input that reaches it. Exploitation requires high privileges and a difficult local attack, and the reported consequence is confidentiality loss without data modification or service interruption.

CVSS severity5.3
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper buffer restrictions in Intel processor BIOS firmware allow local users with privileged access to disclose information. Intel has not published the affected firmware routine, the buffer operation, or the input that reaches it. Exploitation requires high privileges and a difficult local attack, and the reported consequence is confidentiality loss without data modification or service interruption.

The record

CVE
CVE-2022-27879
Published
Aug 11, 2023
Updated
Feb 13, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-92, CWE-119
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Aug 11, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 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 vectorlocal
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.4NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
5.3Intel CorporationCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-92DEPRECATED: Improper Sanitization of Custom Special Characters
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer

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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