CVE-2014-2597: PCNetSoftware RAC Server 4.0.4 and 4.0.5 allows local users to cause a denial of service (disabled keyboard or

Routine

MEDIUM 4.9DOWNGRADE

CVE-2014-2597 is a medium-severity flaw (CVSS 4.9) affecting rac server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PCNetSoftware RAC Server 4.0.4 and 4.0.5 allows local users to cause a denial of service (disabled keyboard or crash) via a large input buffer to unspecified IOCTL requests in RACDriver.sys, which triggers a buffer over-read.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	4.9 (Medium)
EPSS exploit chance	0.3% (top 73%)
CISA exploited list	No
Weakness	CWE-20
Published	2014-04-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: remote-rac

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

Am I affected?

Timeline

2014-04-18 22:14 UTCPublished CVE record published
2026-06-17 00:06 UTCUpdated Record last modified

remote-rac rac server DOWNGRADE

Affected: 4.0.4 · 4.0.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.0.4

1. Check installed version

apt-cache policy rac-server || rpm -q rac-server || rac-server --version

2. No fixed release: DOWNGRADE to a release before 4.0.4 (Debian / Ubuntu)

apt-cache madison rac-server sudo apt install rac-server=<VERSION_BEFORE_4.0.4> sudo apt-mark hold rac-server

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

dnf --showduplicates list rac-server sudo dnf downgrade rac-server-<VERSION_BEFORE_4.0.4> sudo dnf versionlock add rac-server

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-2014-2597?

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

Is CVE-2014-2597 being exploited?

CVE-2014-2597 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-2014-2597 affect?

CVE-2014-2597 affects rac server. Severity is medium (CVSS 4.9). PCNetSoftware RAC Server 4.0.4 and 4.0.5 allows local users to cause a denial of service (disabled keyboard or crash) via a large input buffer to unspecified IOCTL requests in RACDriver.sys, which triggers a buffer over-read.

How urgent is CVE-2014-2597?

Priority 24/100. No elevated risk signals yet.

References

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