HOMEVULNERABILITIESCVE-2020-18171
HIGH

CVE-2020-18171

CWE-269Published: July 26, 2021· Updated: Jun 17, 2026

8.8
CVSS v3.1

Official Description

TechSmith Snagit 19.1.0.2653 uses Object Linking and Embedding (OLE) which can allow attackers to obfuscate and embed crafted files used to escalate privileges. NOTE: This implies that Snagit's use of OLE is a security vulnerability unto itself and it is not. See reference document for more details.

NVD Source

Technical Analysis

CVE-2020-18171 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeChanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected Vendors & Products

Microsoft1 product(s)
windows
techsmith1 product(s)
snagit
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://docs.google.com/document/d/1W33rsdISmexLOGS4VmLUIITRU_KqGULcij1Z6QyxsjU/edit?usp=sharing
ADVISORYhttps://github.com/GitHubAssessments/CVE_Assessment_06_2019/blob/master/Snagit_Review.pdf
ADVISORYhttps://docs.google.com/document/d/1W33rsdISmexLOGS4VmLUIITRU_KqGULcij1Z6QyxsjU/edit?usp=sharing
ADVISORYhttps://github.com/GitHubAssessments/CVE_Assessment_06_2019/blob/master/Snagit_Review.pdf

All References (5)

→
https://docs.google.com/document/d/1W33rsdISmexLOGS4VmLUIITRU_KqGULcij1Z6QyxsjU/edit?usp=sharingThird Party Advisory
→
https://github.com/GitHubAssessments/CVE_Assessment_06_2019/blob/master/Snagit_Review.pdfExploit · Third Party Advisory
→
https://github.com/TechSmith/TSC-Security-Public/blob/main/advisories/2020/CVE-2020-18171-dispute.md
→
https://docs.google.com/document/d/1W33rsdISmexLOGS4VmLUIITRU_KqGULcij1Z6QyxsjU/edit?usp=sharingThird Party Advisory
→
https://github.com/GitHubAssessments/CVE_Assessment_06_2019/blob/master/Snagit_Review.pdfExploit · Third Party Advisory

Quick Facts

CVE IDCVE-2020-18171
CVSS Score8.8 / 10
SeverityHIGH
WeaknessCWE-269
CISA KEVNo
Affected2 vendor(s)
PublishedJul 26, 2021

Related CVEs (CWE-269)

CVE-2022-24783
10.0
CVE-2021-1388
10.0
CVE-2018-4310
10.0
CVE-2020-27655
10.0
CVE-2025-0505
10.0
CVE-2026-31852
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-18171 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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