CVE-2025-3359Public exploit

Process crash via HPGL font parsing overread

Published Apr 7, 2025 · Updated May 3, 2026

Out-of-bounds read in Gnuplot before 6.1 allows local users to crash the process through a crafted script containing an HPGL font name. HPGL2_set_font passes a font name without a comma to sscanf, causing parsing to read one byte beyond the allocated string before later plotting code dereferences invalid memory. Exploitation requires local execution of the crafted script and interrupts only that Gnuplot process.

CVSS severity6.2
Medium
EPSS probability0.20%
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 Gnuplot before 6.1 allows local users to crash the process through a crafted script containing an HPGL font name. HPGL2_set_font passes a font name without a comma to sscanf, causing parsing to read one byte beyond the allocated string before later plotting code dereferences invalid memory. Exploitation requires local execution of the crafted script and interrupts only that Gnuplot process.

The record

CVE
CVE-2025-3359
Published
Apr 7, 2025
Updated
May 3, 2026
Vendor
389 Directory Server
Product
Red Hat Enterprise Linux 7
Classifications
CWE-754
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 7, 2025CVE publishedPublication date reported by the CVE source.
  2. May 3, 2026Record 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 versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

389 Directory Server · Red Hat Enterprise Linux 7Affected versions are unavailable in this record.
Gnuplot · Gnuplotversion=0 <6.1
389 Directory Server · Red Hat Enterprise Linux 8Affected versions are unavailable in this record.

Published CVSS scores

6.2Red HatCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 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 exploitPublished

Weakness, pattern, technique

CWE-754Improper Check for Unusual or Exceptional Conditions

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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