CVE-2018-25273Public exploit

Application crash via oversized License Key input

Published Apr 26, 2026 · Updated Apr 26, 2026

Buffer overflow in the License Key field in Acute Systems CrossFont 7.5 allows local users to crash the application with oversized input. The field's processing copies a 4,000-byte License Key payload without checking that it fits the destination buffer. Exploitation requires local access to paste the generated text into the Enter Key dialog and click OK; the documented consequence is an application crash.

CVSS severity6.2
Medium
EPSS probability0.13%
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 License Key field in Acute Systems CrossFont 7.5 allows local users to crash the application with oversized input. The field's processing copies a 4,000-byte License Key payload without checking that it fits the destination buffer. Exploitation requires local access to paste the generated text into the Enter Key dialog and click OK; the documented consequence is an application crash.

The record

CVE
CVE-2018-25273
Published
Apr 26, 2026
Updated
Apr 26, 2026
Vendor
Acute Systems
Product
CrossFont
Classifications
CWE-120, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 26, 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?

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

  1. Affected versionversion=7.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Acute Systems · CrossFontversion=7.5

Published CVSS scores

6.9VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
6.2VulnCheckCVSS: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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

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Technologies

Your stack

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Your stack

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