CVE-2012-3020

highpriority · track · 31EPSS 0.014 · 73 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.44% (73rd) EPSS

CVSS 7.5 · high

Is it mine?

12 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-27

The Siemens Synco OZW Web Server devices OZW672.*, OZW772.*, and OZW775 with firmware before 4 have an unspecified default password, which makes it easier for remote attackers to obtain administrative access via a network session.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

No vendor fix yet; a mitigation is available.

MitigationSynco modelscisa_csaf_ot
Siemens has released a firmware update (Version 4) and security advisory SSA-283911 (https://cert-portal.siemens.com/productcert/pdf/ssa-283911.pdf) for the OZW672 and OZW772 devices that enforces a password change at initial login. (http://support.automation.siemens.com/WW/view/en/41929231/130000) Users may upgrade to this firmware version, but this is not required to change the default password on existing devices. Siemens urges customers to set a secure password on the web interface for all network devices.
http://support.automation.siemens.com/WW/view/en/41929231/130000

cvss

Technical severity, 0–10. One row per scoring source.

9.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 6.4–9

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v2.09criticalAV:N/AC:L/Au:N/C:P/I:P/A:Csecondary · CISA US

v2.06.4mediumAV:N/AC:L/Au:N/C:P/I:P/A:P/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-255USprimaryCWE-262US

affected products (12)

Products and version ranges known to be affected.

Siemens Synco models: OZW775|OZW672.01|OZW672.04|OZW672.16|OZW772.01|OZW772.04|OZW772.16|OZW772.250all versionscisa_csaf_otUS
Siemens Synco models≤ OZW775|OZW672.01|OZW672.04|OZW672.16|OZW772.01|OZW772.04|OZW772.16|OZW772.250cisa_csaf_otUS
n/a n/a≤ n/aenisa_euvdEU
siemens synco ozw web server= ozw672.01nvdUScpe:2.3:h:siemens:synco_ozw_web_server:*:*:*:*:*:*:*:*
siemens synco ozw web server= ozw672.04nvdUScpe:2.3:h:siemens:synco_ozw_web_server:*:*:*:*:*:*:*:*
siemens synco ozw web server= ozw672.16nvdUScpe:2.3:h:siemens:synco_ozw_web_server:*:*:*:*:*:*:*:*
siemens synco ozw web server= ozw772.01nvdUScpe:2.3:h:siemens:synco_ozw_web_server:*:*:*:*:*:*:*:*
siemens synco ozw web server= ozw772.04nvdUScpe:2.3:h:siemens:synco_ozw_web_server:*:*:*:*:*:*:*:*
siemens synco ozw web server= ozw772.16nvdUScpe:2.3:h:siemens:synco_ozw_web_server:*:*:*:*:*:*:*:*
siemens synco ozw web server= ozw772.250nvdUScpe:2.3:h:siemens:synco_ozw_web_server:*:*:*:*:*:*:*:*
siemens synco ozw web server= ozw775nvdUScpe:2.3:h:siemens:synco_ozw_web_server:*:*:*:*:*:*:*:*
siemens synco ozw web server firmware≤ 3.0nvdUScpe:2.3:o:siemens:synco_ozw_web_server_firmware:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-12-214-01Siemens Synco OZW Default Password2012-05-05icsa · cisa_csaf_otUS
This CSAF advisory was extracted from unstructured data and may contain inaccuracies. If you notice any errors, please reach out to the designated contact at CISA CSAF: central@cisa.dhs.gov

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot nvd NVD CVE.org MITRE

published 2012-08-06modified 2026-06-16

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references (7)

External citations — patches, advisories, analysis.

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