CVE-2012-4355: TCPIPS_Story.dll in Sielco Sistemi Winlog Pro SCADA before 2.07.18 and Winlog Lite SCADA before 2.07.18 allows

Q: How do I fix CVE-2012-4355?

winlog pro: upgrade to newer than 2.07.17; winlog lite: upgrade to newer than 2.07.17. Exact commands for each OS are on this page.

Q: Is CVE-2012-4355 being exploited?

CVE-2012-4355 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-2012-4355 affect?

CVE-2012-4355 affects winlog pro, winlog lite. Severity is high (CVSS 9.3). TCPIPS_Story.dll in Sielco Sistemi Winlog Pro SCADA before 2.07.18 and Winlog Lite SCADA before 2.07.18 allows remote attackers to execute arbitrary code via a port-46824 TCP packet with a crafted negative integer after the opcode, triggeri

Q: How urgent is CVE-2012-4355?

Priority 61/100. Critical severity; EPSS top 5%: very likely to be exploited; Public exploit reference

This week

HIGH 9.3UPGRADEUPGRADE

CVE-2012-4355 is a high-severity flaw (CVSS 9.3) affecting winlog pro, winlog lite. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

TCPIPS_Story.dll in Sielco Sistemi Winlog Pro SCADA before 2.07.18 and Winlog Lite SCADA before 2.07.18 allows remote attackers to execute arbitrary code via a port-46824 TCP packet with a crafted negative integer after the opcode, triggering incorrect function-pointer processing that can lead to a buffer overflow. NOTE: some of these details are obtained from third party information. NOTE: this vulnerability exists because of an incomplete fix

Why this priority

Critical severity
EPSS top 5%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	9.3 (High)
EPSS exploit chance	8.2% (top 5%)
CISA exploited list	No
Weakness	CWE-189
Published	2012-08-19
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: sielcosistemi

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2012-08-19 20:55 UTCPublished CVE record published
2026-06-16 23:44 UTCUpdated Record last modified

sielcosistemi winlog pro UPGRADE

Affected: <= 2.07.17 · 2.06.00 · 2.06.03 · 2.06.04 · 2.06.06 · 2.06.09 · 2.06.10 · 2.06.12

Fixed in: newer than 2.07.17

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy winlog-pro || rpm -q winlog-pro || winlog-pro --version

2. UPGRADE to newer than 2.07.17 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade winlog-pro

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade winlog-pro

Note

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

sielcosistemi winlog lite UPGRADE

Affected: <= 2.07.17 · 2.06.00 · 2.06.03 · 2.06.04 · 2.06.06 · 2.06.09 · 2.06.10 · 2.06.12

Fixed in: newer than 2.07.17

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy winlog-lite || rpm -q winlog-lite || winlog-lite --version

2. UPGRADE to newer than 2.07.17 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade winlog-lite

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade winlog-lite

Note

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

Public exploits and detection

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

Exploit-DB: Sielco Sistemi Winlog 2.07.16 - Multiple Vulnerabilities

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-2012-4355?

winlog pro: upgrade to newer than 2.07.17; winlog lite: upgrade to newer than 2.07.17. Exact commands for each OS are on this page.

Is CVE-2012-4355 being exploited?

CVE-2012-4355 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-2012-4355 affect?

CVE-2012-4355 affects winlog pro, winlog lite. Severity is high (CVSS 9.3). TCPIPS_Story.dll in Sielco Sistemi Winlog Pro SCADA before 2.07.18 and Winlog Lite SCADA before 2.07.18 allows remote attackers to execute arbitrary code via a port-46824 TCP packet with a crafted negative integer after the opcode, triggeri

How urgent is CVE-2012-4355?

Priority 61/100. Critical severity; EPSS top 5%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2017-5161 HIGH 7.2 UPGRADE UPGRADE An issue was discovered in Sielco Sistemi Winlog Lite SCADA Software, versions prior to Version 3.02.01, and W
CVE-2012-4359 HIGH 9.3 UPGRADE UPGRADE Sielco Sistemi Winlog Pro SCADA before 2.07.18 and Winlog Lite SCADA before 2.07.18 do not validate the return
CVE-2012-4358 HIGH 9.3 UPGRADE UPGRADE Sielco Sistemi Winlog Pro SCADA before 2.07.17 and Winlog Lite SCADA before 2.07.17 do not validate the return
CVE-2012-4357 HIGH 9.3 UPGRADE UPGRADE Array index error in Sielco Sistemi Winlog Pro SCADA before 2.07.17 and Winlog Lite SCADA before 2.07.17 might
CVE-2012-4356 MEDIUM 4.3 UPGRADE UPGRADE Multiple directory traversal vulnerabilities in Sielco Sistemi Winlog Pro SCADA before 2.07.17 and Winlog Lite

References

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