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Vulnerabilities

Vulnerability · CVE-2023-5992

A vulnerability was found in OpenSC where PKCS#1 encryption padding removal is not implemented as side-channel resistant.

Published Jan 31, 2024 · catalog updated Nov 5, 2026 · opensc project

Last checked Nov 6, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2023-5992. EPSS is 1.16%. Act only if a listed version of opensc project 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

Severity
Medium5.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.16%
Remediation
Version ranges on file
Affected products
cpe opensc project/opensc · cpe redhat/enterprise linux · cpe redhat/enterprise linux eus · cpe redhat/enterprise linux for arm 64 · cpe redhat/enterprise linux for arm 64 eus

A vulnerability was found in OpenSC where PKCS#1 encryption padding removal is not implemented as side-channel resistant. This issue may result in the potential leak of private data.

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 opensc project/opensc< 0.25.0
  • cpe redhat/enterprise linux7.0
  • cpe redhat/enterprise linux8.0
  • cpe redhat/enterprise linux9.0
  • cpe redhat/enterprise linux eus9.4
  • cpe redhat/enterprise linux for arm 648.0_aarch64
  • cpe redhat/enterprise linux for arm 649.0_aarch64
  • cpe redhat/enterprise linux for arm 64 eus9.4_aarch64

How to fix CVE-2023-5992

  • Upgrade

    CVE-2023-5992 lists a fix boundary at 0.25.0. Compare the installed build with that boundary before you change production.

  • Version check

    Affected < 0.25.0

  • 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-2023-5992. EPSS is 1.16%. Act only if a listed version of opensc project is installed.

Which versions are affected?

Compare what you have installed with opensc project/opensc < 0.25.0; redhat/enterprise linux 7.0; redhat/enterprise linux 8.0; redhat/enterprise linux 9.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-203: Observable Discrepancy. EPSS 1.16%. 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.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 31, 2024 · NIST NVD

    Detected

    A vulnerability was found in OpenSC where PKCS#1 encryption padding removal is not implemented as side-channel resistant. This issue may result in the potential leak of private data.

  2. Nov 5, 2026 · NIST NVD

    Updated

    A vulnerability was found in OpenSC where PKCS#1 encryption padding removal is not implemented as side-channel resistant. This issue may result in the potential leak of private data.

Sources

  • CVE.orgVulnerability recordCVE-2023-5992

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-2023-5992

    A vulnerability was found in OpenSC where PKCS#1 encryption padding removal is not implemented as side-channel resistant. This issue may result in the potential leak of private data.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 5, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 6, 2026
  • NIST NVDNov 5, 2026