CVE-2025-7976

User-assisted code execution via unvalidated CHX deserialization

Published Sep 2, 2025 · Updated Sep 2, 2025

Deserialization in Anritsu ShockLine 2023.7.5 allows remote attackers to execute code through malicious CHX content. The CHX parser deserializes user-supplied data without adequate validation, allowing attacker-controlled objects to execute in the current process. Exploitation requires the target to open a malicious file or visit a page that supplies the content.

CVSS severity7.8
High
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deserialization in Anritsu ShockLine 2023.7.5 allows remote attackers to execute code through malicious CHX content. The CHX parser deserializes user-supplied data without adequate validation, allowing attacker-controlled objects to execute in the current process. Exploitation requires the target to open a malicious file or visit a page that supplies the content.

The record

CVE
CVE-2025-7976
Published
Sep 2, 2025
Updated
Sep 2, 2025
Vendor
Anritsu
Product
ShockLine
Classifications
CWE-502, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 2, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 2, 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?

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

  1. Affected versionversion=2023.7.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Anritsu · ShockLineversion=2023.7.5

Published CVSS scores

7.8Zero Day InitiativeCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1204.002Malicious File

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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