CVE-2025-4494: A vulnerability, which was classified as critical, was found in JAdmin-JAVA JAdmin 1.0

This week

HIGH 7.3REMOTEDOWNGRADE

CVE-2025-4494 is a high-severity flaw (CVSS 7.3) affecting jadmin. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability, which was classified as critical, was found in JAdmin-JAVA JAdmin 1.0. Affected is the function toLogin of the file NoNeedLoginController.java of the component Admin Backend. The manipulation leads to improper authentication. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

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	7.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-287
Published	2025-05-09
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: jadmin-java

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

Am I affected?

Timeline

2025-05-09 22:15 UTCPublished CVE record published
2026-06-17 09:33 UTCUpdated Record last modified

jadmin-java jadmin DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy jadmin || rpm -q jadmin || jadmin --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison jadmin sudo apt install jadmin=<VERSION_BEFORE_1.0> sudo apt-mark hold jadmin

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

dnf --showduplicates list jadmin sudo dnf downgrade jadmin-<VERSION_BEFORE_1.0> sudo dnf versionlock add jadmin

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-2025-4494?

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

Is CVE-2025-4494 being exploited?

CVE-2025-4494 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-2025-4494 affect?

CVE-2025-4494 affects jadmin. Severity is high (CVSS 7.3). A vulnerability, which was classified as critical, was found in JAdmin-JAVA JAdmin 1.0. Affected is the function toLogin of the file NoNeedLoginController.java of the component Admin Backend. The manipulation leads to improper authenticatio

How urgent is CVE-2025-4494?

Priority 49/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Java vulnerabilities

Related CVEs

CVE-2025-4495 LOW 3.5 DOWNGRADE A vulnerability has been found in JAdmin-JAVA JAdmin 1.0 and classified as problematic

References

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