CVE-2006-6477: FRAgent.exe in Mandiant First Response (MFR) before 1.1.1, when run in daemon mode and configured to use only

Q: How do I fix CVE-2006-6477?

first response: upgrade to newer than 1.1. Exact commands for each OS are on this page.

Q: Is CVE-2006-6477 being exploited?

CVE-2006-6477 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-2006-6477 affect?

CVE-2006-6477 affects first response. Severity is low (CVSS 2.4). FRAgent.exe in Mandiant First Response (MFR) before 1.1.1, when run in daemon mode and configured to use only HTTP, allows local users to modify requests and responses between a client and an agent by hijacking an HTTP FRAgent daemon and co

Q: How urgent is CVE-2006-6477?

Priority 13/100. No elevated risk signals yet.

Routine

LOW 2.4UPGRADE

CVE-2006-6477 is a low-severity flaw (CVSS 2.4) affecting first response. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

FRAgent.exe in Mandiant First Response (MFR) before 1.1.1, when run in daemon mode and configured to use only HTTP, allows local users to modify requests and responses between a client and an agent by hijacking an HTTP FRAgent daemon and conducting a man-in-the-middle (MITM) attack.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	2.4 (Low)
EPSS exploit chance	0.3% (top 82%)
CISA exploited list	No
Published	2006-12-20
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: mandiant

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2006-12-20 02:28 UTCPublished CVE record published
2026-06-16 22:33 UTCUpdated Record last modified

mandiant first response UPGRADE

Affected: <= 1.1

Fixed in: newer than 1.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy first-response || rpm -q first-response || first-response --version

2. UPGRADE to newer than 1.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade first-response

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade first-response

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-2006-6477?

first response: upgrade to newer than 1.1. Exact commands for each OS are on this page.

Is CVE-2006-6477 being exploited?

CVE-2006-6477 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-2006-6477 affect?

CVE-2006-6477 affects first response. Severity is low (CVSS 2.4). FRAgent.exe in Mandiant First Response (MFR) before 1.1.1, when run in daemon mode and configured to use only HTTP, allows local users to modify requests and responses between a client and an agent by hijacking an HTTP FRAgent daemon and co

How urgent is CVE-2006-6477?

Priority 13/100. No elevated risk signals yet.

Related CVEs

CVE-2006-6476 LOW 2.4 UPGRADE FRAgent.exe in Mandiant First Response (MFR) before 1.1.1, when run in daemon mode and when the agent is bound
CVE-2006-6475 HIGH 7.1 UPGRADE FRAgent.exe in Mandiant First Response (MFR) before 1.1.1, when run in daemon mode with SSL enabled, allows re

References

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