CVE-2025-27831Public exploit

Code execution via unchecked long-character copy

Published Mar 25, 2025 · Updated Nov 3, 2025

Buffer overflow in the DOCXWRITE/TXTWRITE devices in Artifex Ghostscript before 10.05.0 allows attackers to execute code via crafted input. The text-emission path in devices/vector/doc_common.c copies long character data into a text buffer without first ensuring that the destination is large enough. Processing a malicious document can execute code in the invoking application’s context; the public demonstration requires opening the file in LibreOffice.

CVSS severity9.8
Critical
EPSS probability0.58%
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 the DOCXWRITE/TXTWRITE devices in Artifex Ghostscript before 10.05.0 allows attackers to execute code via crafted input. The text-emission path in devices/vector/doc_common.c copies long character data into a text buffer without first ensuring that the destination is large enough. Processing a malicious document can execute code in the invoking application’s context; the public demonstration requires opening the file in LibreOffice.

The record

CVE
CVE-2025-27831
Published
Mar 25, 2025
Updated
Nov 3, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120, T1203
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Mar 25, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA ADP VulnrichmentCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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)
VectorUnavailable
PrivilegesUnavailable
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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