CVE-2025-8355: In Xerox FreeFlow Core version 8.0.4, improper handling of XML input allows injection of external entities

This week

HIGH 7.5REMOTEDOWNGRADE

CVE-2025-8355 is a high-severity flaw (CVSS 7.5) affecting freeflow core. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In Xerox FreeFlow Core version 8.0.4, improper handling of XML input allows injection of external entities. An attacker can craft malicious XML containing references to internal URLs, this results in a Server-Side Request Forgery (SSRF).

Why this priority

High severity
EPSS top 5%: very likely to be exploited
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	8.8% (top 5%)
CISA exploited list	No
Weakness	CWE-611
Published	2025-08-08
Last modified	2026-06-17

Publisher (CNA): Xerox · Vendor: xerox

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

Am I affected?

Timeline

2025-08-08 16:15 UTCPublished CVE record published
2026-06-17 10:06 UTCUpdated Record last modified

xerox freeflow core DOWNGRADE

Affected: 8.0.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.0.4

1. Check installed version

apt-cache policy freeflow-core || rpm -q freeflow-core || freeflow-core --version

2. No fixed release: DOWNGRADE to a release before 8.0.4 (Debian / Ubuntu)

apt-cache madison freeflow-core sudo apt install freeflow-core=<VERSION_BEFORE_8.0.4> sudo apt-mark hold freeflow-core

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

dnf --showduplicates list freeflow-core sudo dnf downgrade freeflow-core-<VERSION_BEFORE_8.0.4> sudo dnf versionlock add freeflow-core

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-2025-8355?

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

Is CVE-2025-8355 being exploited?

CVE-2025-8355 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-2025-8355 affect?

CVE-2025-8355 affects freeflow core. Severity is high (CVSS 7.5). In Xerox FreeFlow Core version 8.0.4, improper handling of XML input allows injection of external entities. An attacker can craft malicious XML containing references to internal URLs, this results in a Server-Side Request Forgery (SSRF).

How urgent is CVE-2025-8355?

Priority 55/100. High severity; EPSS top 5%: very likely to be exploited; Remotely exploitable, no login, no user action

Software pages

Xerox vulnerabilities

Related CVEs

CVE-2026-2252 HIGH 7.5 UPGRADE An XML External Entity (XXE) vulnerability allows malicious user to perform Server-Side Request Forgery (SSRF)
CVE-2026-2251 CRITICAL 9.8 UPGRADE Improper limitation of a pathname to a restricted directory (Path Traversal) vulnerability in Xerox FreeFlow C
CVE-2025-8356 CRITICAL 9.8 DOWNGRADE In Xerox FreeFlow Core version 8.0.4, an attacker can exploit a Path Traversal vulnerability to access unautho
CVE-2024-47559 HIGH 7.6 DOWNGRADE Authenticated RCE via Path Traversal
CVE-2024-47558 HIGH 7.6 DOWNGRADE Authenticated RCE via Path Traversal

References

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