CVE-2014-4686: The Project administration application in Siemens SIMATIC WinCC before 7.3, as used in PCS7 and other products

Q: How do I fix CVE-2014-4686?

simatic pcs7: upgrade to newer than 8.0; wincc: upgrade to newer than 7.2. Exact commands for each OS are on this page.

Q: Is CVE-2014-4686 being exploited?

CVE-2014-4686 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-2014-4686 affect?

CVE-2014-4686 affects simatic pcs7, wincc. Severity is medium (CVSS 6.8). The Project administration application in Siemens SIMATIC WinCC before 7.3, as used in PCS7 and other products, has a hardcoded encryption key, which allows remote attackers to obtain sensitive information by extracting this key from anothe

Q: How urgent is CVE-2014-4686?

Priority 40/100. No elevated risk signals yet.

This month

MEDIUM 6.8UPGRADEUPGRADE

CVE-2014-4686 is a medium-severity flaw (CVSS 6.8) affecting simatic pcs7, wincc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Project administration application in Siemens SIMATIC WinCC before 7.3, as used in PCS7 and other products, has a hardcoded encryption key, which allows remote attackers to obtain sensitive information by extracting this key from another product installation and then employing this key during the sniffing of network traffic on TCP port 1030.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.8 (Medium)
EPSS exploit chance	1.1% (top 35%)
CISA exploited list	No
Published	2014-07-24
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: siemens

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

Am I affected?

Timeline

2014-07-24 14:55 UTCPublished CVE record published
2026-06-17 00:10 UTCUpdated Record last modified

siemens simatic pcs7 UPGRADE

Affected: <= 8.0 · 7.1 sp3 · 8.0

Fixed in: newer than 8.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy simatic-pcs7 || rpm -q simatic-pcs7 || simatic-pcs7 --version

2. UPGRADE to newer than 8.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade simatic-pcs7

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade simatic-pcs7

Note

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

siemens wincc UPGRADE

Affected: <= 7.2 · 5.0 · 5.0 sp1 · 6.0 · 6.0 sp2 · 6.0 sp3 · 6.0 sp4 · 7.0

Fixed in: newer than 7.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy wincc || rpm -q wincc || wincc --version

2. UPGRADE to newer than 7.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade wincc

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade wincc

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-2014-4686?

simatic pcs7: upgrade to newer than 8.0; wincc: upgrade to newer than 7.2. Exact commands for each OS are on this page.

Is CVE-2014-4686 being exploited?

CVE-2014-4686 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-2014-4686 affect?

CVE-2014-4686 affects simatic pcs7, wincc. Severity is medium (CVSS 6.8). The Project administration application in Siemens SIMATIC WinCC before 7.3, as used in PCS7 and other products, has a hardcoded encryption key, which allows remote attackers to obtain sensitive information by extracting this key from anothe

How urgent is CVE-2014-4686?

Priority 40/100. No elevated risk signals yet.

Software pages

Siemens vulnerabilities

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References

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