CVE-2023-20845

Local information disclosure via unchecked imgsys range

Published Sep 4, 2023 · Updated Oct 8, 2024

Out-of-bounds read in MediaTek imgsys on affected chipsets allows local users with System privileges to disclose memory through crafted input. imgsys fails to validate an input range before reading from it, permitting the read to cross the intended memory boundary. Exploitation requires System execution privileges and user interaction; the reported consequence is local information disclosure only.

CVSS severityUnavailable
Unscored
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in MediaTek imgsys on affected chipsets allows local users with System privileges to disclose memory through crafted input. imgsys fails to validate an input range before reading from it, permitting the read to cross the intended memory boundary. Exploitation requires System execution privileges and user interaction; the reported consequence is local information disclosure only.

The record

CVE
CVE-2023-20845
Published
Sep 4, 2023
Updated
Oct 8, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-20
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Sep 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 8, 2024Record 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

No CVSS assessment is available in this record.

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation

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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