Vulnerability · CVE-2025-34165
A stack-based buffer overflow vulnerability in NetSupport Manager 14.x versions prior to 14.12.0000 allows a remote, unauthenticated attacker to cause a denial of service (DoS) or
Published Aug 29, 2025 · catalog updated May 14, 2026 · NetSupport Ltd. NetSupport Manager
Last checked Oct 30, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2025-34165. EPSS is 0.50%. Act only if a listed version of NetSupport Ltd. NetSupport Manager is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
Same product and reporting
- CVE-2025-34164 · Critical
- Severity
- High8.8
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.50%
- Remediation
- Version ranges on file
- Affected products
- vendor NetSupport Ltd. NetSupport Manager 14.0 <14.12.0000
A stack-based buffer overflow vulnerability in NetSupport Manager 14.x versions prior to 14.12.0000 allows a remote, unauthenticated attacker to cause a denial of service (DoS) or potentially leak a limited amount of memory.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor NetSupport Ltd. NetSupport Manager 14.0 <14.12.000014.0 <14.12.0000
How to fix CVE-2025-34165
Upgrade
CVE-2025-34165 lists a fix boundary at 14.12.0000. Compare the installed build with that boundary before you change production.
Version check
Seen in 14.0 <14.12.0000
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2025-34165. EPSS is 0.50%. Act only if a listed version of NetSupport Ltd. NetSupport Manager is installed.
Which versions are affected?
Compare what you have installed with NetSupport Ltd. NetSupport Manager 14.0 <14.12.0000 14.0 <14.12.0000. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.50%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Aug 29, 2025 · EUVD
Detected
A stack-based buffer overflow vulnerability in NetSupport Manager 14.x versions prior to 14.12.0000 allows a remote, unauthenticated attacker to cause a denial of service (DoS) or potentially leak a limited amount of memory.
May 14, 2026 · EUVD
Updated
A stack-based buffer overflow vulnerability in NetSupport Manager 14.x versions prior to 14.12.0000 allows a remote, unauthenticated attacker to cause a denial of service (DoS) or potentially leak a limited amount of memory.
Sources
- CVE.orgVulnerability recordCVE-2025-34165
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2025-34165
30-day exploitation probability 0.50%
first.org - EUVDVulnerability recordEUVD-2025-26248
A stack-based buffer overflow vulnerability in NetSupport Manager 14.x versions prior to 14.12.0000 allows a remote, unauthenticated attacker to cause a denial of service (DoS) or potentially leak a limited amount of memory.
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog Oct 30, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- FIRST EPSSOct 24, 2026
- CVE.orgOct 21, 2026
- EUVDOct 21, 2026