CVE-2025-41744: Sprecher Automations SPRECON-E series uses default cryptographic keys that allow an unprivileged remote attack

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CRITICAL 9.1REMOTEMITIGATEMITIGATEMITIGATE

CVE-2025-41744 is a critical-severity flaw (CVSS 9.1) affecting sprecon-e-c firmware, sprecon-e-p firmware, sprecon-e-t3 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Sprecher Automations SPRECON-E series uses default cryptographic keys that allow an unprivileged remote attacker to access all encrypted communications, thereby compromising confidentiality and integrity.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 65%)
CISA exploited list	No
Weakness	CWE-1394
Published	2025-12-02
Last modified	2026-09-26

Publisher (CNA): CERT VDE · Vendor: sprecher-automation

Last updated 2026-09-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-12-02 11:15 UTCPublished CVE record published
2026-09-26 00:10 UTCUpdated Record last modified

sprecher-automation sprecon-e-c firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

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.

sprecher-automation sprecon-e-p firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

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.

sprecher-automation sprecon-e-t3 firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

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-2025-41744?

sprecon-e-c firmware: mitigate or apply the listed mitigation; sprecon-e-p firmware: mitigate or apply the listed mitigation; sprecon-e-t3 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-41744 being exploited?

CVE-2025-41744 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-2025-41744 affect?

CVE-2025-41744 affects sprecon-e-c firmware, sprecon-e-p firmware, sprecon-e-t3 firmware. Severity is critical (CVSS 9.1). Sprecher Automations SPRECON-E series uses default cryptographic keys that allow an unprivileged remote attacker to access all encrypted communications, thereby compromising confidentiality and integrity.

How urgent is CVE-2025-41744?

Priority 46/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-41742 CRITICAL 9.8 MITIGATE MITIGATE Sprecher Automations SPRECON-E-C, SPRECON-E-P, SPRECON-E-T3 is vulnerable to attack by an unauthorized remote
CVE-2025-41743 MEDIUM 4.0 UPGRADE UPGRADE Insufficient encryption strength in Sprecher Automation SPRECON-E-C, SPRECON-E-P, and SPRECON-E-T3 allows a lo
CVE-2024-6758 MEDIUM 6.5 UPGRADE UPGRADE Improper Privilege Management in Sprecher Automation SPRECON-E below version 8.71j allows a remote attacker wi

References

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