Gnutls: gnutls: memory corruption due to off-by-one error in pkcs#12 bag handling

Summary

A flaw was found in gnutls. An off-by-one error exists in the PKCS#12 bag element bounds check. This vulnerability allows an remote attacker to write past the internal array of a PKCS#12 bag when appending to a bag that already contains 32 elements. This memory corruption could lead to a denial of service (DoS) or potentially other unspecified impacts.

Timeline

1. May 26, 2026, 9:29 PM UTCCVE published
2. May 27, 2026, 12:47 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: yes · Technical impact: partial

3. Oct 14, 2026, 7:25 PM UTCRecord last updated

Affected versions

• gnutls

  0

• gnutls

  Version range not reported

• gnutls

  Version range not reported

• gnutls

  Version range not reported

• gnutls

  Version range not reported

• gnutls

  Version range not reported

• libtasn1

  Version range not reported

• gnutls

  Version range not reported

• libtasn1

  Version range not reported

• gnutls

  Version range not reported

• libtasn1

  Version range not reported

• gnutls

  Version range not reported

• libtasn1

  Version range not reported

• gnutls

  Version range not reported

• libtasn1

  Version range not reported

• gnutls

  Version range not reported

• libtasn1

  Version range not reported

• gnutls

  Version range not reported

• gnutls

  Version range not reported

• gnutls

  Version range not reported

• gnutls

  Version range not reported

• cert-manager/jetstack-cert-manager-acmesolver-rhel9

  Version range not reported

• cert-manager/jetstack-cert-manager-rhel9

  Version range not reported

• cert-manager/cert-manager-operator-rhel9

  Version range not reported

• cert-manager/cert-manager-operator-bundle

  Version range not reported

• cert-manager/jetstack-cert-manager-acmesolver-rhel9

  Version range not reported

• cert-manager/jetstack-cert-manager-rhel9

  Version range not reported

• cert-manager/cert-manager-istio-csr-rhel9

  Version range not reported

• cert-manager/cert-manager-operator-rhel9

  Version range not reported

• cert-manager/cert-manager-operator-bundle

  Version range not reported

• cert-manager/cert-manager-trust-manager-rhel9

  Version range not reported

• discovery/discovery-server-rhel9

  Version range not reported

• discovery/discovery-ui-rhel9

  Version range not reported

• gnutls-main

  Version range not reported

• rhai/base-image-neuron-rhel9

  Version range not reported

• rhui5/cds-rhel9

  Version range not reported

• rhui5/haproxy-rhel9

  Version range not reported

• rhui5/installer-rhel9

  Version range not reported

• rhui5/rhua-rhel9

  Version range not reported

• rhui5/cds-kubernetes-tp-rhel9

  Version range not reported

• rhui5/installer-tp-rhel9

  Version range not reported

• rhui5/rhua-tp-rhel9

  Version range not reported

• gnutls

  Version range not reported

• openshift4/ose-hypershift-rhel9

  Version range not reported

• openshift/ose-rhel-coreos-8

  Version range not reported

• openshift/ose-rhel-coreos-9

  Version range not reported

References 25