CVE-2026-33156Public exploit

Local code execution via version.dll sideloading

Published Mar 20, 2026 · Updated Mar 20, 2026

DLL sideloading in ScreenToGif 2.42.1 and earlier allows local users to execute code by placing version.dll beside the portable executable. The portable executable searches its application directory before Windows System32 and loads the attacker-controlled version.dll. Exploitation requires the portable copy to reside in a user-writable directory and a user to launch it; code then runs in that user's context.

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

DLL sideloading in ScreenToGif 2.42.1 and earlier allows local users to execute code by placing version.dll beside the portable executable. The portable executable searches its application directory before Windows System32 and loads the attacker-controlled version.dll. Exploitation requires the portable copy to reside in a user-writable directory and a user to launch it; code then runs in that user's context.

The record

CVE
CVE-2026-33156
Published
Mar 20, 2026
Updated
Mar 20, 2026
Vendor
Nicke Manarin
Product
ScreenToGif
Classifications
CWE-426, CWE-427, T1574.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 20, 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=<= 2.42.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Nicke Manarin · ScreenToGifversion=<= 2.42.1

Published CVSS scores

7.8GitHub, Inc.CVSS: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.

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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-426Untrusted Search Path
CWE-427Uncontrolled Search Path Element
T1574.002Hijack Execution Flow: DLL Side-Loading

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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