How severe is CVE-2016-2846?

CVE-2016-2846 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2016-2846 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-2846?

CVE-2016-2846 affects Siemens Simatic S7 Cpu 1200 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-2846?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2016-2846 published?

CVE-2016-2846 was published on 2016-03-16 and last updated on 2026-06-17.

CVE-2016-2846

CVE-2016-2846 is a medium-severity vulnerability in Siemens Simatic S7 Cpu 1200 Firmware with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-254.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 6.4
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-254
Affected product: Siemens Simatic S7 Cpu 1200 Firmware
Published: 2016-03-16
Last modified: 2026-06-17

Description

Siemens SIMATIC S7-1200 CPU devices before 4.0 allow remote attackers to bypass a "user program block" protection mechanism via unspecified vectors.

Frequently asked questions

What is CVE-2016-2846?: Siemens SIMATIC S7-1200 CPU devices before 4.0 allow remote attackers to bypass a "user program block" protection mechanism via unspecified vectors.
How severe is CVE-2016-2846?: CVE-2016-2846 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2016-2846 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-2846?: CVE-2016-2846 affects Siemens Simatic S7 Cpu 1200 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-2846?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-2846 published?: CVE-2016-2846 was published on 2016-03-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:siemens:simatic_s7_cpu_1200_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Siemens Simatic S7 Cpu 1200 Firmware

CVE-2014-2250 — High (CVSS 8.3): The random-number generator on Siemens SIMATIC S7-1200 CPU PLC devices with firmware before 4.0 does not have…
CVE-2014-2258 — High (CVSS 7.8): Siemens SIMATIC S7-1200 CPU PLC devices with firmware before 4.0 allow remote attackers to cause a denial of service…
CVE-2014-2254 — High (CVSS 7.8): Siemens SIMATIC S7-1200 CPU PLC devices with firmware before 4.0 allow remote attackers to cause a denial of service…
CVE-2014-2256 — High (CVSS 7.8): Siemens SIMATIC S7-1200 CPU PLC devices with firmware before 4.0 allow remote attackers to cause a denial of service…
CVE-2014-2252 — Medium (CVSS 6.1): Siemens SIMATIC S7-1200 CPU PLC devices with firmware before 4.0 allow remote attackers to cause a denial of service…
CVE-2014-2909 — Medium (CVSS 5.8): CRLF injection vulnerability in the integrated web server on Siemens SIMATIC S7-1200 CPU devices 2.x and 3.x allows…

All CVEs affecting Siemens Simatic S7 Cpu 1200 Firmware →

Other CWE-254 vulnerabilities

CVE-2016-5788 — Critical (CVSS 10.0): General Electric (GE) Bently Nevada 3500/22M USB with firmware before 5.0 and Bently Nevada 3500/22M Serial have open…
CVE-2015-3972 — Critical (CVSS 10.0): The web interface on Janitza UMG 508, 509, 511, 604, and 605 devices supports only short PIN values for authentication,…
CVE-2015-1158 — Critical (CVSS 10.0): The add_job function in scheduler/ipp.c in cupsd in CUPS before 2.0.3 performs incorrect free operations for…
CVE-2019-15149 — Critical (CVSS 9.8): core.py in Mitogen before 0.2.8 has a typo that drops the unidirectional-routing protection mechanism in the case of a…
CVE-2017-8227 — Critical (CVSS 9.8): Amcrest IPM-721S V2.420.AC00.16.R.20160909 devices have a timeout policy to wait for 5 minutes in case 30 incorrect…
CVE-2016-9568 — Critical (CVSS 9.8): A security design issue can allow an unprivileged user to interact with the Carbon Black Sensor and perform…

Browse all CWE-254 vulnerabilities →