CVE-2023-23595: BlueCat Device Registration Portal 2.2 allows XXE attacks that exfiltrate single-line files

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HIGH 7.5REMOTEDOWNGRADE

CVE-2023-23595 is a high-severity flaw (CVSS 7.5) affecting device registration portal. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

BlueCat Device Registration Portal 2.2 allows XXE attacks that exfiltrate single-line files. A single-line file might contain credentials, such as "machine example.com login daniel password qwerty" in the documentation example for the .netrc file format. NOTE: 2.x versions are no longer supported. There is no available information about whether any later version is affected.

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	1.0% (top 38%)
CISA exploited list	No
Weakness	CWE-611
Published	2023-01-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: bluecatnetworks

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

Am I affected?

Timeline

2023-01-15 07:15 UTCPublished CVE record published
2026-06-17 05:37 UTCUpdated Record last modified

bluecatnetworks device registration portal DOWNGRADE

Affected: 2.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.2

1. Check installed version

apt-cache policy device-registration-portal || rpm -q device-registration-portal || device-registration-portal --version

2. No fixed release: DOWNGRADE to a release before 2.2 (Debian / Ubuntu)

apt-cache madison device-registration-portal sudo apt install device-registration-portal=<VERSION_BEFORE_2.2> sudo apt-mark hold device-registration-portal

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

dnf --showduplicates list device-registration-portal sudo dnf downgrade device-registration-portal-<VERSION_BEFORE_2.2> sudo dnf versionlock add device-registration-portal

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-2023-23595?

device registration portal: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-23595 being exploited?

CVE-2023-23595 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-2023-23595 affect?

CVE-2023-23595 affects device registration portal. Severity is high (CVSS 7.5). BlueCat Device Registration Portal 2.2 allows XXE attacks that exfiltrate single-line files. A single-line file might contain credentials, such as "machine example.com login daniel password qwerty" in the documentation example for the .netr

How urgent is CVE-2023-23595?

Priority 52/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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