What is CVE-2018-25273?

CVE-2018-25273 is a medium-severity vulnerability in Acutesystems Crossfont, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.2/10. Published 2026-04-26.

How severe is CVE-2018-25273?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Buffer overflow in Acutesystems Crossfont

CVE-2018-25273

CrossFont 7.5 contains a buffer overflow vulnerability that allows local attackers to crash the application by submitting an oversized payload in the License Key field. Attackers can generate a malicious file containing 4000 bytes of data, paste it into the License Key input field, and trigger an application crash when processing the input.

Vulnerability class: Buffer Overflow

Published 2026-04-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.001 (2.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 2.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000

Affected products

Acutesystems Crossfont — versions 7.5

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

www.exploit-db.com/exploits/45494 (exploit)
www.vulncheck.com/advisories/crossfont-denial-of-service-via-license-key-field (third-party-advisory)

Frequently asked questions

What is CVE-2018-25273?: CVE-2018-25273 is a medium-severity vulnerability in Acutesystems Crossfont, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.2/10. Published 2026-04-26.
How severe is CVE-2018-25273?: Medium severity. CVSS v3 base score is 6.2 out of 10.