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Vulnerabilities

Vulnerability · CVE-2022-1473

The OPENSSL_LH_flush() function, which empties a hash table, contains a bug that breaks reuse of the memory occuppied by the removed hash table entries.

Published May 3, 2022 · catalog updated Oct 14, 2026 · The OPENSSL_LH_flush() function, which

Check if you run it

No confirmed exploitation is on record for CVE-2022-1473. EPSS is 4.58%. Act only if a listed version of The OPENSSL_LH_flush() function, which is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (The OPENSSL_LH_flush() function, which).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
4.58%
Remediation
Advisory link
Affected products
cpe netapp/a700s firmware · cpe netapp/active iq unified manager · cpe netapp/clustered data ontap · cpe netapp/clustered data ontap antivirus connector · cpe netapp/h300s firmware · cpe netapp/h500s firmware

The OPENSSL_LH_flush() function, which empties a hash table, contains a bug that breaks reuse of the memory occuppied by the removed hash table entries. This function is used when decoding certificates or keys. If a long lived process periodically decodes certificates or keys its memory usage will expand without bounds and the process might be terminated by the operating system causing a denial of service. Also traversing the empty hash table entries will take increasingly more time. Typically such long lived processes might be TLS clients or TLS servers configured to accept client certificate authentication. The function was added in the OpenSSL 3.0 version thus older releases are not affected by the issue. Fixed in OpenSSL 3.0.3 (Affected 3.0.0,3.0.1,3.0.2).

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 netapp/a700s firmwareversion unspecified
  • cpe netapp/active iq unified managerversion unspecified
  • cpe netapp/clustered data ontapversion unspecified
  • cpe netapp/clustered data ontap antivirus connectorversion unspecified
  • cpe netapp/h300s firmwareversion unspecified
  • cpe netapp/h500s firmwareversion unspecified
  • cpe netapp/h700s firmwareversion unspecified
  • cpe netapp/santricity smi-s providerversion unspecified
  • cpe netapp/smi-s providerversion unspecified
  • cpe netapp/snapmanagerversion unspecified
  • cpe netapp/solidfire, enterprise sds & hci storage nodeversion unspecified
  • cpe openssl/opensslversion unspecified

How to fix CVE-2022-1473

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-2022-1473. EPSS is 4.58%. Act only if a listed version of The OPENSSL_LH_flush() function, which is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-459. EPSS 4.58%. 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. May 3, 2022 · NIST NVD

    Detected

    The OPENSSL_LH_flush() function, which empties a hash table, contains a bug that breaks reuse of the memory occuppied by the removed hash table entries. This function is used when decoding certificates or keys. If a long lived process periodically decodes certificates or keys its memory usage will expand without bounds and the process might be terminated by the operating system causing a denial of

  2. Oct 14, 2026 · NIST NVD

    Updated

    The OPENSSL_LH_flush() function, which empties a hash table, contains a bug that breaks reuse of the memory occuppied by the removed hash table entries. This function is used when decoding certificates or keys. If a long lived process periodically decodes certificates or keys its memory usage will expand without bounds and the process might be terminated by the operating system causing a denial of

Sources

  • CVE.orgVulnerability recordCVE-2022-1473

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2022-1473

    30-day exploitation probability 4.6%

    first.org
  • NIST NVDVulnerability recordCVE-2022-1473

    The OPENSSL_LH_flush() function, which empties a hash table, contains a bug that breaks reuse of the memory occuppied by the removed hash table entries. This function is used when decoding certificates or keys. If a long lived process periodically decodes certificates or keys its

    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.