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Vulnerabilities

Vulnerability · CVE-2019-12904

In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel attack because physical addresses are available to other processes.

Published Jun 20, 2019 · catalog updated Oct 14, 2026 · In Libgcrypt 1.8.4, the

Check if you run it

No confirmed exploitation is on record for CVE-2019-12904. EPSS is 2.21%. Act only if a listed version of In Libgcrypt 1.8.4, the is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (In Libgcrypt 1.8.4, the).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
2.21%
Remediation
Advisory link
Affected products
cpe gnupg/libgcrypt · cpe opensuse/leap

In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel attack because physical addresses are available to other processes. (The C implementation is used on platforms where an assembly-language implementation is unavailable.) NOTE: the vendor's position is that the issue report cannot be validated because there is no description of an attack

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 gnupg/libgcrypt1.8.4
  • cpe opensuse/leap15.0

How to fix CVE-2019-12904

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-2019-12904. EPSS is 2.21%. Act only if a listed version of In Libgcrypt 1.8.4, the is installed.

Which versions are affected?

Compare what you have installed with 1.8.4, 15.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-668: Exposure of Resource to Wrong Sphere. EPSS 2.21%. 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. Jun 20, 2019 · NIST NVD

    Detected

    In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel attack because physical addresses are available to other processes. (The C implementation is used on platforms where an assembly-language implementation is unavailable.) NOTE: the vendor's position is that the issue report cannot be validated because there is no description of an attack

  2. Oct 14, 2026 · NIST NVD

    Updated

    In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel attack because physical addresses are available to other processes. (The C implementation is used on platforms where an assembly-language implementation is unavailable.) NOTE: the vendor's position is that the issue report cannot be validated because there is no description of an attack

Sources

  • CVE.orgVulnerability recordCVE-2019-12904

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2019-12904

    30-day exploitation probability 2.2%

    first.org
  • NIST NVDVulnerability recordCVE-2019-12904

    In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel attack because physical addresses are available to other processes. (The C implementation is used on platforms where an assembly-language implementation is unavailable.) NOTE: the ven

    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.