CVE-2025-27833

Memory corruption via unchecked TTF name copy

Published Mar 25, 2025 · Updated Mar 26, 2025

Buffer overflow in Artifex Ghostscript before 10.05.0 allows local users to corrupt process memory via a crafted PDF with a long TTF font name. In pdf/pdf_fmap.c, the PDF font-mapping path copies the TTF name into a buffer without first checking that the name fits. Exploitation requires Ghostscript to process the crafted document; the overflow can crash the process, while public records do not establish reliable code execution.

CVSS severity7.8
High
EPSS probability0.22%
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 Artifex Ghostscript before 10.05.0 allows local users to corrupt process memory via a crafted PDF with a long TTF font name. In pdf/pdf_fmap.c, the PDF font-mapping path copies the TTF name into a buffer without first checking that the name fits. Exploitation requires Ghostscript to process the crafted document; the overflow can crash the process, while public records do not establish reliable code execution.

The record

CVE
CVE-2025-27833
Published
Mar 25, 2025
Updated
Mar 26, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 25, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 26, 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 vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.1SUSECVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
7.8CISA-ADPCVSS:3.1/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.

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

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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