ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2021-22925

curl supports the command line option, known as in libcurl.

Published Aug 5, 2021 · catalog updated Oct 14, 2026 · curl supports the command

Check if you run it

No confirmed exploitation is on record for CVE-2021-22925. EPSS is 5.37%. Act only if a listed version of curl supports the command is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (curl supports the command).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
5.37%
Remediation
Advisory link
Affected products
cpe apple/mac os x · cpe fedoraproject/fedora · cpe haxx/curl · cpe netapp/cloud backup · cpe netapp/clustered data ontap · cpe netapp/h300s firmware

curl supports the command line option, known as in libcurl. This rarely used option is used to send variable=content pairs toTELNET servers.Due to flaw in the option parser for sending variables, libcurlcould be made to pass on uninitialized data from a stack based buffer to theserver. Therefore potentially revealing sensitive internal information to theserver using a clear-text network protocol.This could happen because curl did not call and use sscanf() correctly whenparsing the string provided by the application.

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.

  • cpe apple/mac os x10.15.7
  • cpe fedoraproject/fedora33
  • cpe haxx/curlversion unspecified
  • cpe netapp/cloud backupversion unspecified
  • cpe netapp/clustered data ontapversion unspecified
  • cpe netapp/h300s firmwareversion unspecified
  • cpe netapp/h500s firmwareversion unspecified
  • cpe netapp/hci management nodeversion unspecified
  • cpe netapp/solidfireversion unspecified
  • cpe oracle/mysql serverversion unspecified
  • cpe siemens/sinec infrastructure network servicesversion unspecified

How to fix CVE-2021-22925

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-2021-22925. EPSS is 5.37%. Act only if a listed version of curl supports the command is installed.

Which versions are affected?

Compare what you have installed with apple/mac os x 10.15.7. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-200: Exposure of Sensitive Information; CWE-908: Use of Uninitialized Resource. EPSS 5.37%. 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.

  1. Aug 5, 2021 · NIST NVD

    Detected

    curl supports the command line option, known as in libcurl. This rarely used option is used to send variable=content pairs toTELNET servers.Due to flaw in the option parser for sending variables, libcurlcould be made to pass on uninitialized data from a stack based buffer to theserver. Therefore potentially revealing sensitive internal information to theserver using a clear-text network protocol.T

  2. Oct 14, 2026 · NIST NVD

    Updated

    curl supports the command line option, known as in libcurl. This rarely used option is used to send variable=content pairs toTELNET servers.Due to flaw in the option parser for sending variables, libcurlcould be made to pass on uninitialized data from a stack based buffer to theserver. Therefore potentially revealing sensitive internal information to theserver using a clear-text network protocol.T

Sources

  • CVE.orgVulnerability recordCVE-2021-22925

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2021-22925

    30-day exploitation probability 5.4%

    first.org
  • NIST NVDVulnerability recordCVE-2021-22925

    curl supports the command line option, known as in libcurl. This rarely used option is used to send variable=content pairs toTELNET servers.Due to flaw in the option parser for sending variables, libcurlcould be made to pass on uninitialized

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.