CVE-2025-45814: Missing authentication checks in the query.fcgi endpoint of NS3000 v8.1.1.125110 , v7.2.8.124852 , and v7.x an

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CRITICAL 9.8REMOTEMITIGATEMITIGATE

CVE-2025-45814 is a critical-severity flaw (CVSS 9.8) affecting ns3000 firmware, ns2000 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Missing authentication checks in the query.fcgi endpoint of NS3000 v8.1.1.125110 , v7.2.8.124852 , and v7.x and NS2000 v7.02.08 allows attackers to execute a session hijacking attack.

Why this priority

Critical 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	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-306
Published	2025-07-02
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: novelsat

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

Am I affected?

Timeline

2025-07-02 17:15 UTCPublished CVE record published
2026-06-17 09:25 UTCUpdated Record last modified

novelsat ns3000 firmware MITIGATE

Affected: 7.2.8.124852 · 8.1.1.125110

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.2.8.124852

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

novelsat ns2000 firmware MITIGATE

Affected: 7.02.08

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.02.08

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2025-45814?

ns3000 firmware: mitigate or apply the listed mitigation; ns2000 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-45814 being exploited?

CVE-2025-45814 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-2025-45814 affect?

CVE-2025-45814 affects ns3000 firmware, ns2000 firmware. Severity is critical (CVSS 9.8). Missing authentication checks in the query.fcgi endpoint of NS3000 v8.1.1.125110 , v7.2.8.124852 , and v7.x and NS2000 v7.02.08 allows attackers to execute a session hijacking attack.

How urgent is CVE-2025-45814?

Priority 56/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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