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CVE-2025-6504

Possibilities of IP Spoofing via X-Forwarded-For (XFF) Header

Description

In HDP Server versions below 4.6.2.2978 on Linux, unauthorized access could occur via IP spoofing using the X-Forwarded-For header.  Since XFF is a client-controlled header, it could be spoofed, allowing unauthorized access if the spoofed IP matched a whitelisted range. This vulnerability could be exploited to bypass IP restrictions, though valid user credentials would still be required for resource access.

Timeline

  1. ID reserved

    By ProgressSoftware

  2. · 36 days later

    Published

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2025-6504, by who scored it
Scored byCVSSScoreVector
ProgressSoftwareCNA (assigner)3.1High8.4CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H
NVDNVD · Analyzed3.1High8.4CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H
EPSS (exploitation in 30 days)
0.20% · top 90% of all CVEs (11 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.4.

Affected products

What to do

Solution: Update the HDP Server to version 4.6.2.2978 or later.

References

References1

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .