CVE-2023-34407: OfflinePlayerService.exe in Harbinger Offline Player 4.0.6.0.2 allows directory traversal as LocalSystem via .

This week

HIGH 7.5REMOTEDOWNGRADE

CVE-2023-34407 is a high-severity flaw (CVSS 7.5) affecting office player. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

OfflinePlayerService.exe in Harbinger Offline Player 4.0.6.0.2 allows directory traversal as LocalSystem via ..\ in a URL.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 33%)
CISA exploited list	No
Weakness	CWE-22
Published	2023-06-05
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: harbingergroup

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

Am I affected?

Timeline

2023-06-05 02:15 UTCPublished CVE record published
2026-06-17 06:03 UTCUpdated Record last modified

harbingergroup office player DOWNGRADE

Affected: 4.0.6.0.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.0.6.0.2

1. Check installed version

apt-cache policy office-player || rpm -q office-player || office-player --version

2. No fixed release: DOWNGRADE to a release before 4.0.6.0.2 (Debian / Ubuntu)

apt-cache madison office-player sudo apt install office-player=<VERSION_BEFORE_4.0.6.0.2> sudo apt-mark hold office-player

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

dnf --showduplicates list office-player sudo dnf downgrade office-player-<VERSION_BEFORE_4.0.6.0.2> sudo dnf versionlock add office-player

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-2023-34407?

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

Is CVE-2023-34407 being exploited?

CVE-2023-34407 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-2023-34407 affect?

CVE-2023-34407 affects office player. Severity is high (CVSS 7.5). OfflinePlayerService.exe in Harbinger Offline Player 4.0.6.0.2 allows directory traversal as LocalSystem via ..\ in a URL.

How urgent is CVE-2023-34407?

Priority 53/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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