CVE-2023-23431

System-file overwrite via improper signature verification

Published Dec 29, 2023 · Updated Sep 9, 2024

Improper signature verification in HONOR 50 firmware 7.0.0.138 through 7.0.0.156 allows local users to replace a system file with a forgery. HONOR identifies the locus only as signature management and has not disclosed the affected component, validation path, or incorrect verification operation. Exploitation requires local device access and leaves the affected system file replaced by attacker-supplied content.

CVSS severity7.1
High
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper signature verification in HONOR 50 firmware 7.0.0.138 through 7.0.0.156 allows local users to replace a system file with a forgery. HONOR identifies the locus only as signature management and has not disclosed the affected component, validation path, or incorrect verification operation. Exploitation requires local device access and leaves the affected system file replaced by attacker-supplied content.

The record

CVE
CVE-2023-23431
Published
Dec 29, 2023
Updated
Sep 9, 2024
Vendor
HONOR
Product
HONOR 50
Classifications
CWE-347
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 29, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 9, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.0.0.138 <7.0.0.157

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

HONOR · HONOR 50version=7.0.0.138 <7.0.0.157

Published CVSS scores

7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
7.3Honor Device Co., Ltd.CVSS:3.1/AV:L/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-347Improper Verification of Cryptographic Signature

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo