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Vulnerabilities

Vulnerability · CVE-2022-27781

libcurl provides the option to allow applications torequest details to be returned about a server's certificate chain.Due to an erroneous function, a malicious server…

Published Jun 2, 2022 · catalog updated Oct 14, 2026 · the affected product

Check if you run it

No confirmed exploitation is on record for CVE-2022-27781. EPSS is 2.90%. Act only if a listed version of the affected product is installed.

Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
2.90%
Remediation
Advisory link
Affected products
cpe debian/debian linux · cpe haxx/curl · cpe netapp/clustered data ontap · cpe netapp/h300s firmware · cpe netapp/h410s firmware · cpe netapp/h500s firmware

libcurl provides the option to allow applications torequest details to be returned about a server's certificate chain.Due to an erroneous function, a malicious server could make libcurl built withNSS get stuck in a never-ending busy-loop when trying to retrieve thatinformation.

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 debian/debian linux10.0
  • cpe debian/debian linux11.0
  • cpe haxx/curlversion unspecified
  • cpe netapp/clustered data ontapversion unspecified
  • cpe netapp/h300s firmwareversion unspecified
  • cpe netapp/h410s firmwareversion unspecified
  • cpe netapp/h500s firmwareversion unspecified
  • cpe netapp/h700s firmwareversion unspecified
  • cpe netapp/hci bootstrap osversion unspecified
  • cpe netapp/hci compute nodeversion unspecified
  • cpe netapp/solidfire & hci management nodeversion unspecified
  • cpe netapp/solidfire, enterprise sds & hci storage nodeversion unspecified

How to fix CVE-2022-27781

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-2022-27781. EPSS is 2.90%. Act only if a listed version of the affected product is installed.

Which versions are affected?

Compare what you have installed with debian/debian linux 10.0; debian/debian linux 11.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-400: Uncontrolled Resource Consumption; CWE-835: Infinite Loop. EPSS 2.90%. 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. Jun 2, 2022 · NIST NVD

    Detected

    libcurl provides the option to allow applications torequest details to be returned about a server's certificate chain.Due to an erroneous function, a malicious server could make libcurl built withNSS get stuck in a never-ending busy-loop when trying to retrieve thatinformation.

  2. Oct 14, 2026 · NIST NVD

    Updated

    libcurl provides the option to allow applications torequest details to be returned about a server's certificate chain.Due to an erroneous function, a malicious server could make libcurl built withNSS get stuck in a never-ending busy-loop when trying to retrieve thatinformation.

Sources

  • CVE.orgVulnerability recordCVE-2022-27781

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2022-27781

    30-day exploitation probability 2.9%

    first.org
  • NIST NVDVulnerability recordCVE-2022-27781

    libcurl provides the option to allow applications torequest details to be returned about a server's certificate chain.Due to an erroneous function, a malicious server could make libcurl built withNSS get stuck in a never-ending busy-loop when trying to retrieve

    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.