CVE-2025-40807: A vulnerability has been identified in Gridscale X Prepay (All versions < V4.2.1)

Q: How do I fix CVE-2025-40807?

gridscale x prepay: upgrade to 4.2.1. Exact commands for each OS are on this page.

Q: Is CVE-2025-40807 being exploited?

CVE-2025-40807 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-40807 affect?

CVE-2025-40807 affects gridscale x prepay. Severity is medium (CVSS 6.3). A vulnerability has been identified in Gridscale X Prepay (All versions < V4.2.1). The affected application is vulnerable to capture-replay of authentication tokens. This could allow an authenticated but already locked-out user to establish

Q: How urgent is CVE-2025-40807?

Priority 27/100. No elevated risk signals yet.

Routine

MEDIUM 6.3UPGRADE

CVE-2025-40807 is a medium-severity flaw (CVSS 6.3) affecting gridscale x prepay. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability has been identified in Gridscale X Prepay (All versions < V4.2.1). The affected application is vulnerable to capture-replay of authentication tokens. This could allow an authenticated but already locked-out user to establish still valid user sessions.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 78%)
CISA exploited list	No
Weakness	CWE-294
Published	2025-12-09
Last modified	2026-10-23

Publisher (CNA): Siemens AG · Vendor: siemens

Last updated 2026-10-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-12-09 16:17 UTCPublished CVE record published
2026-10-23 22:10 UTCUpdated Record last modified

siemens gridscale x prepay UPGRADE

Affected: < 4.2.1

Fixed in: 4.2.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy gridscale-x-prepay || rpm -q gridscale-x-prepay || gridscale-x-prepay --version

2. UPGRADE to 4.2.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade gridscale-x-prepay

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade gridscale-x-prepay

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2025-40807?

gridscale x prepay: upgrade to 4.2.1. Exact commands for each OS are on this page.

Is CVE-2025-40807 being exploited?

CVE-2025-40807 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-2025-40807 affect?

CVE-2025-40807 affects gridscale x prepay. Severity is medium (CVSS 6.3). A vulnerability has been identified in Gridscale X Prepay (All versions < V4.2.1). The affected application is vulnerable to capture-replay of authentication tokens. This could allow an authenticated but already locked-out user to establish

How urgent is CVE-2025-40807?

Priority 27/100. No elevated risk signals yet.

Related CVEs

CVE-2025-40806 MEDIUM 5.3 UPGRADE A vulnerability has been identified in Gridscale X Prepay (All versions < V4.2.1)

References

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