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CVE-2025-59695: Entrust nShield Connect XC, nShield 5c, and nShield HSMi through 13.6.11, or 13.7 (patched in 13.6.12 (LTS) an

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CRITICAL 9.8REMOTEUPGRADEUPGRADEUPGRADE

CVE-2025-59695 is a critical-severity flaw (CVSS 9.8) affecting nshield 5c firmware, nshield hsmi firmware, nshield connect xc base firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Entrust nShield Connect XC, nShield 5c, and nShield HSMi through 13.6.11, or 13.7 (patched in 13.6.12 (LTS) and 13.9.0 (STS)), allow a user with OS root access to alter firmware on the Chassis Management Board (without Authentication). This is called F04.

Why this priority

  • Critical severity
  • Public exploit reference
  • CISA SSVC: automatable with total technical impact
  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score9.8 (Critical)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance0.7% (top 48%)
CISA exploited listNo
WeaknessCWE-306
Published2025-12-02
Last modified2026-08-26
Publisher (CNA): MITRE · Vendor: entrust

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Last updated 2026-08-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

entrust nshield 5c firmware UPGRADE
Affected: < 13.6.12 · >= 13.7.3 and < 13.9.0
Fixed in: 13.6.12, 13.9.0
Safe to downgrade to: a release before 13.7.3
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.
entrust nshield hsmi firmware UPGRADE
Affected: < 13.6.12 · >= 13.7.3 and < 13.9.0
Fixed in: 13.6.12, 13.9.0
Safe to downgrade to: a release before 13.7.3
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.
entrust nshield connect xc base firmware UPGRADE
Affected: < 13.6.12 · >= 13.7.3 and < 13.9.0
Fixed in: 13.6.12, 13.9.0
Safe to downgrade to: a release before 13.7.3
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.
entrust nshield connect xc mid firmware UPGRADE
Affected: < 13.6.12 · >= 13.7.3 and < 13.9.0
Fixed in: 13.6.12, 13.9.0
Safe to downgrade to: a release before 13.7.3
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.
entrust nshield connect xc high firmware UPGRADE
Affected: < 13.6.12 · >= 13.7.3 and < 13.9.0
Fixed in: 13.6.12, 13.9.0
Safe to downgrade to: a release before 13.7.3
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.

Exact fixes by distribution

Fedora ELN · openjpeg · FIXED · 2.5.4-5.eln159 · FEDORA-2026-1a5f60f401 · source
sudo dnf upgrade --advisory=FEDORA-2026-1a5f60f401
Fedora 46 · trustedqsl · FIXED · 2.8.7-1.fc46 · FEDORA-2026-6b1bc90ebc · source
sudo dnf upgrade --advisory=FEDORA-2026-6b1bc90ebc

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

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-2025-59695?

nshield 5c firmware: upgrade to 13.6.12, 13.9.0; nshield hsmi firmware: upgrade to 13.6.12, 13.9.0; nshield connect xc base firmware: upgrade to 13.6.12, 13.9.0. Exact commands for each OS are on this page.

Is CVE-2025-59695 being exploited?

CVE-2025-59695 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-2025-59695 affect?

CVE-2025-59695 affects nshield 5c firmware, nshield hsmi firmware, nshield connect xc base firmware. Severity is critical (CVSS 9.8). Entrust nShield Connect XC, nShield 5c, and nShield HSMi through 13.6.11, or 13.7 (patched in 13.6.12 (LTS) and 13.9.0 (STS)), allow a user with OS root access to alter firmware on the Chassis Management Board (without Authentication). This

How urgent is CVE-2025-59695?

Priority 60/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Related CVEs

References

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