CVE-2021-25690Network attack vector

Unauthenticated remote crash via null pointer dereference

Published Feb 11, 2021 · Updated Aug 3, 2024

Null pointer dereference in Teradici PCoIP Software Client 20.07.2 and earlier allows remote attackers to crash the client via network input. The vendor record identifies a null pointer dereference but does not publish the specific function, file, or input-processing locus involved. No confidentiality or integrity impact is reported; exploitation requires network reachability to the client and results in a software crash.

CVSS severity7.5
High
EPSS probability1.01%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Null pointer dereference in Teradici PCoIP Software Client 20.07.2 and earlier allows remote attackers to crash the client via network input. The vendor record identifies a null pointer dereference but does not publish the specific function, file, or input-processing locus involved. No confidentiality or integrity impact is reported; exploitation requires network reachability to the client and results in a software crash.

The record

CVE
CVE-2021-25690
Published
Feb 11, 2021
Updated
Aug 3, 2024
Vendor
Teradici
Product
PCoIP Software Client
Classifications
CWE-476, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 11, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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=20.07.2 and earlier

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Teradici · PCoIP Software Clientversion=20.07.2 and earlier

Published CVSS scores

7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.0NVDAV:N/AC:L/Au:N/C:N/I:N/A:P

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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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