CVE-2005-2280: Cisco Security Agent (CSA) 4.5 allows remote attackers to cause a denial of service (system crash) via a craft

Routine

MEDIUM 5.0DOWNGRADE

CVE-2005-2280 is a medium-severity flaw (CVSS 5.0) affecting security agent. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cisco Security Agent (CSA) 4.5 allows remote attackers to cause a denial of service (system crash) via a crafted IP packet.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Published	2005-07-18
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: cisco

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

Am I affected?

Timeline

2005-07-18 04:00 UTCPublished CVE record published
2026-06-16 22:14 UTCUpdated Record last modified

cisco security agent DOWNGRADE

Affected: 4.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.5

1. Check installed version

apt-cache policy security-agent || rpm -q security-agent || security-agent --version

2. No fixed release: DOWNGRADE to a release before 4.5 (Debian / Ubuntu)

apt-cache madison security-agent sudo apt install security-agent=<VERSION_BEFORE_4.5> sudo apt-mark hold security-agent

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list security-agent sudo dnf downgrade security-agent-<VERSION_BEFORE_4.5> sudo dnf versionlock add security-agent

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2005-2280?

security agent: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2005-2280 being exploited?

CVE-2005-2280 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-2005-2280 affect?

CVE-2005-2280 affects security agent. Severity is medium (CVSS 5.0). Cisco Security Agent (CSA) 4.5 allows remote attackers to cause a denial of service (system crash) via a crafted IP packet.

How urgent is CVE-2005-2280?

Priority 35/100. No elevated risk signals yet.

Software pages

Cisco vulnerabilities

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References

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