CVE-2023-4590Public exploit

Code execution via overlong filename argument

Published Nov 27, 2023 · Updated Aug 2, 2024

Buffer overflow in Frhed 1.6.0 allows local users to execute arbitrary code by supplying an overlong filename argument. The filename-argument handler copies attacker-controlled bytes beyond a fixed buffer, overwriting SEH control data used during exception handling. Exploitation requires an affected Windows host and user interaction to launch Frhed with the crafted argument; successful control-flow redirection runs code in that user's context.

CVSS severity7.3
High
EPSS probability1.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in Frhed 1.6.0 allows local users to execute arbitrary code by supplying an overlong filename argument. The filename-argument handler copies attacker-controlled bytes beyond a fixed buffer, overwriting SEH control data used during exception handling. Exploitation requires an affected Windows host and user interaction to launch Frhed with the crafted argument; successful control-flow redirection runs code in that user's context.

The record

CVE
CVE-2023-4590
Published
Nov 27, 2023
Updated
Aug 2, 2024
Vendor
Frhed
Product
Frhed
Classifications
CWE-120, T1203
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 27, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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?

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

  1. Affected versionversion=1.6.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Frhed · Frhedversion=1.6.0

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.3INCIBECVSS:3.1/AV:L/AC:L/PR:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1203Exploitation for Client Execution

Public exploit references

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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