CVE-2018-25377Public exploit

Local code execution via registration-field SEH overwrite

Published May 25, 2026 · Updated May 25, 2026

Buffer overflow in Socusoft Flash Slideshow Maker Professional 5.20 allows local users to execute arbitrary code through its registration dialog. The dialog accepts a 2,300-byte payload through its Name and Code fields, overwrites the SEH chain after 1,328 bytes, and returns through cximage.dll without SafeSEH or ASLR. Exploitation requires a local user to paste crafted text and submit the dialog; the demonstrated payload opens a reverse shell with system privileges.

CVSS severity8.6
High
EPSS probability0.18%
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 Socusoft Flash Slideshow Maker Professional 5.20 allows local users to execute arbitrary code through its registration dialog. The dialog accepts a 2,300-byte payload through its Name and Code fields, overwrites the SEH chain after 1,328 bytes, and returns through cximage.dll without SafeSEH or ASLR. Exploitation requires a local user to paste crafted text and submit the dialog; the demonstrated payload opens a reverse shell with system privileges.

The record

CVE
CVE-2018-25377
Published
May 25, 2026
Updated
May 25, 2026
Vendor
Socusoft
Product
Flash Slideshow Maker Professional
Classifications
CWE-120, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 25, 2026CVE publishedPublication date reported by the CVE source.
  2. May 25, 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=5.20

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Socusoft · Flash Slideshow Maker Professionalversion=5.20

Published CVSS scores

8.4VulnCheckCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.6VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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 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-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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