CVE-2021-46660: Signiant Manager+Agents before 15.1 allows XML External Entity (XXE) attacks.

Q: How do I fix CVE-2021-46660?

manager\+agents: upgrade to 15.1. Exact commands for each OS are on this page.

Q: Is CVE-2021-46660 being exploited?

CVE-2021-46660 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-46660 affect?

CVE-2021-46660 affects manager\+agents. Severity is critical (CVSS 9.8). Signiant Manager+Agents before 15.1 allows XML External Entity (XXE) attacks.

Q: How urgent is CVE-2021-46660?

Priority 56/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2021-46660 is a critical-severity flaw (CVSS 9.8) affecting manager\+agents. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Signiant Manager+Agents before 15.1 allows XML External Entity (XXE) attacks.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Weakness	CWE-611
Published	2022-01-30
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: signiant

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-01-30 00:15 UTCPublished CVE record published
2026-06-17 04:15 UTCUpdated Record last modified

signiant manager\+agents UPGRADE

Affected: < 15.1

Fixed in: 15.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy manager+agents || rpm -q manager+agents || manager+agents --version

2. UPGRADE to 15.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade manager+agents

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade manager+agents

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-46660?

manager\+agents: upgrade to 15.1. Exact commands for each OS are on this page.

Is CVE-2021-46660 being exploited?

CVE-2021-46660 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-46660 affect?

CVE-2021-46660 affects manager\+agents. Severity is critical (CVSS 9.8). Signiant Manager+Agents before 15.1 allows XML External Entity (XXE) attacks.

How urgent is CVE-2021-46660?

Priority 56/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2022-22795 MEDIUM 6.8 UPGRADE Signiant - Manager+Agents XML External Entity (XXE) - Extract internal files of the affected machine An attack

References

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