CVE-2018-18256: An issue was discovered in CapMon Access Manager 5.4.1.1005

This month

HIGH 7.8DOWNGRADE

CVE-2018-18256 is a high-severity flaw (CVSS 7.8) affecting access manager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in CapMon Access Manager 5.4.1.1005. A regular user can obtain local administrator privileges if they run any whitelisted application through the Custom App Launcher.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 65%)
CISA exploited list	No
Weakness	CWE-287
Published	2019-03-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: capmon

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

Am I affected?

Timeline

2019-03-15 15:29 UTCPublished CVE record published
2026-06-17 01:46 UTCUpdated Record last modified

capmon access manager DOWNGRADE

Affected: 5.4.1.1005

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.4.1.1005

1. Check installed version

apt-cache policy access-manager || rpm -q access-manager || access-manager --version

2. No fixed release: DOWNGRADE to a release before 5.4.1.1005 (Debian / Ubuntu)

apt-cache madison access-manager sudo apt install access-manager=<VERSION_BEFORE_5.4.1.1005> sudo apt-mark hold access-manager

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

dnf --showduplicates list access-manager sudo dnf downgrade access-manager-<VERSION_BEFORE_5.4.1.1005> sudo dnf versionlock add access-manager

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-2018-18256?

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

Is CVE-2018-18256 being exploited?

CVE-2018-18256 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-2018-18256 affect?

CVE-2018-18256 affects access manager. Severity is high (CVSS 7.8). An issue was discovered in CapMon Access Manager 5.4.1.1005. A regular user can obtain local administrator privileges if they run any whitelisted application through the Custom App Launcher.

How urgent is CVE-2018-18256?

Priority 41/100. High severity; Public exploit reference

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References

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