CVE-2024-55955: An incorrect permissions assignment vulnerability in Trend Micro Deep Security 20.0 agents between versions 20

Routine

MEDIUM 6.7DOWNGRADE

CVE-2024-55955 is a medium-severity flaw (CVSS 6.7) affecting deep security agent. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An incorrect permissions assignment vulnerability in Trend Micro Deep Security 20.0 agents between versions 20.0.1-9400 and 20.0.1-23340 could allow a local attacker to escalate privileges on affected installations. Please note: an attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.7 (Medium)
Attack vector	Local
Attack complexity	High
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.1% (top 97%)
CISA exploited list	No
Weakness	CWE-427, CWE-732
Published	2024-12-31
Last modified	2026-06-17

Publisher (CNA): Trend Micro, Inc. · Vendor: trendmicro

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

Am I affected?

Timeline

2024-12-31 17:15 UTCPublished CVE record published
2026-06-17 08:11 UTCUpdated Record last modified

trendmicro deep security agent DOWNGRADE

Affected: 20.0.1 update12510 · 20.0.1 update14610 · 20.0.1 update17380 · 20.0.1 update19250 · 20.0.1 update21510 · 20.0.1 update9400

Fixed in: no fixed release known

Safe to downgrade to: a release before 20.0.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 20.0.1 (Debian / Ubuntu)

apt-cache madison deep-security-agent sudo apt install deep-security-agent=<VERSION_BEFORE_20.0.1> sudo apt-mark hold deep-security-agent

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

dnf --showduplicates list deep-security-agent sudo dnf downgrade deep-security-agent-<VERSION_BEFORE_20.0.1> sudo dnf versionlock add deep-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-2024-55955?

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

Is CVE-2024-55955 being exploited?

CVE-2024-55955 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-2024-55955 affect?

CVE-2024-55955 affects deep security agent. Severity is medium (CVSS 6.7). An incorrect permissions assignment vulnerability in Trend Micro Deep Security 20.0 agents between versions 20.0.1-9400 and 20.0.1-23340 could allow a local attacker to escalate privileges on affected installations. Please note: an attac

How urgent is CVE-2024-55955?

Priority 24/100. No elevated risk signals yet.

Software pages

Trend Micro vulnerabilities

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References

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