A logic error in CRL distribution point validation in AWS-LC before 1.71.0 causes partitioned CRLs to be incorrectly rejected as out of scope, which allows a revoked certificate to bypass certificate revocation checks. To remediate this issue, users should upgrade to AWS-LC 1.71.0 or AWS-LC-FIPS-3.3.0.

The version of amazon-efs-utils installed on the remote host is prior to 3.0.0-4. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3245 advisory.

    time provides date and time handling in Rust. From 0.3.6 to before 0.3.47, when user-provided input is     provided to any type that parses with the RFC 2822 format, a denial of service attack via stack exhaustion     is possible. The attack relies on formally deprecated and rarely-used features that are part of the RFC     2822 format used in a malicious manner. Ordinary, non-malicious input will never encounter this scenario.
    A limit to the depth of recursion was added in v0.3.47. From this version, an error will be returned     rather than exhausting the stack. (CVE-2026-25727)

    Improper certificate validation in PKCS7_verify() in AWS-LC allows an unauthenticated user to bypass     certificate chain verification when processing PKCS7 objects with multiple signers, except the final     signer.

    Customers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC     version 1.69.0. (CVE-2026-3336)

    Observable timing discrepancy in AES-CCM decryption in AWS-LC allows an unauthenticated user to     potentially determine authentication tag validity via timing analysis.



    The impacted implementations are through the EVP CIPHER API: EVP_aes_128_ccm, EVP_aes_192_ccm, and     EVP_aes_256_ccm.



    Customers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC     version 1.69.0. (CVE-2026-3337)

    Improper signature validation in PKCS7_verify() in AWS-LC allows an unauthenticated user to bypass     signature verification when processing PKCS7 objects with Authenticated Attributes.



    Customers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC     version 1.69.0. (CVE-2026-3338)

    A logic error in CRL distribution point validation in AWS-LC before 1.71.0 causes partitioned CRLs to be     incorrectly rejected as out of scope, which allows  a revoked certificate to bypass certificate revocation     checks.

    To remediate this issue, users should upgrade to AWS-LC 1.71.0 or AWS-LC-FIPS-3.3.0. (CVE-2026-4428)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1564 advisory.

    time provides date and time handling in Rust. From 0.3.6 to before 0.3.47, when user-provided input is     provided to any type that parses with the RFC 2822 format, a denial of service attack via stack exhaustion     is possible. The attack relies on formally deprecated and rarely-used features that are part of the RFC     2822 format used in a malicious manner. Ordinary, non-malicious input will never encounter this scenario.
    A limit to the depth of recursion was added in v0.3.47. From this version, an error will be returned     rather than exhausting the stack. (CVE-2026-25727)

    Improper certificate validation in PKCS7_verify() in AWS-LC allows an unauthenticated user to bypass     certificate chain verification when processing PKCS7 objects with multiple signers, except the final     signer.

    Customers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC     version 1.69.0. (CVE-2026-3336)

    Observable timing discrepancy in AES-CCM decryption in AWS-LC allows an unauthenticated user to     potentially determine authentication tag validity via timing analysis.



    The impacted implementations are through the EVP CIPHER API: EVP_aes_128_ccm, EVP_aes_192_ccm, and     EVP_aes_256_ccm.



    Customers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC     version 1.69.0. (CVE-2026-3337)

    Improper signature validation in PKCS7_verify() in AWS-LC allows an unauthenticated user to bypass     signature verification when processing PKCS7 objects with Authenticated Attributes.



    Customers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC     version 1.69.0. (CVE-2026-3338)

    A logic error in CRL distribution point validation in AWS-LC before 1.71.0 causes partitioned CRLs to be     incorrectly rejected as out of scope, which allows  a revoked certificate to bypass certificate revocation     checks.

    To remediate this issue, users should upgrade to AWS-LC 1.71.0 or AWS-LC-FIPS-3.3.0. (CVE-2026-4428)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A logic error in CRL distribution point validation in AWS-LC before 1.71.0 causes partitioned CRLs to be     incorrectly rejected as out of scope, which allows a revoked certificate to bypass certificate revocation     checks. To remediate this issue, users should upgrade to AWS-LC 1.71.0 or AWS-LC-FIPS-3.3.0.
    (CVE-2026-4428)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
306268	Amazon Linux 2 : amazon-efs-utils, --advisory ALAS2-2026-3245 (ALAS-2026-3245)	Nessus	Amazon Linux Local Security Checks	critical
306191	Amazon Linux 2023 : amazon-efs-utils (ALAS2023-2026-1564)	Nessus	Amazon Linux Local Security Checks	critical
303221	Linux Distros Unpatched Vulnerability : CVE-2026-4428	Nessus	Misc.	critical

Detections

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CVE-2026-4428

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Tenable Plugins

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