Is CVE-2021-29499 actively exploited?

No active exploitation of CVE-2021-29499 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-29499 be exploited remotely?

Yes. CVE-2021-29499 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-29499?

CVE-2021-29499 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2021-29499

CWE-330Published: May 7, 2021· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

SIF is an open source implementation of the Singularity Container Image Format. The `siftool new` command and func siftool.New() produce predictable UUID identifiers due to insecure randomness in the version of the `github.com/satori/go.uuid` module used as a dependency. A patch is available in version >= v1.2.3 of the module. Users are encouraged to upgrade. As a workaround, users passing CreateInfo struct should ensure the `ID` field is generated using a version of `github.com/satori/go.uuid` that is not vulnerable to this issue.

NVD Source

Technical Analysis

CVE-2021-29499 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.