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No exploitation reportedFix available

CVE-2020-12525

No exploitation reported by the sources we read.

  • Published2021-01-22
  • Fixed in4.5
  • WeaknessCWE-502

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

M&M Software fdtCONTAINER Component in versions below 3.5.20304.x and between 3.6 and 3.6.20304.x is vulnerable to deserialization of untrusted data in its project storage.

Timeline

dates in UTC
  1. 2021-01-2219:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-12525?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-12525?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Wago fdtcontainer application
BranchAffectedFixed in
4.5< 4.54.5
4.5≥ 4.5.0, ≤ 4.5.20304no fix published
4.6≥ 4.6.0, ≤ 4.6.20304no fix published
Wago fdtcontainer component
BranchAffectedFixed in
3.5< 3.53.5
3.5≥ 3.5.0, ≤ 3.5.20304no fix published
3.6≥ 3.6.0, ≤ 3.6.20304no fix published
Emerson rosemount transmitter interface software
BranchAffectedFixed in
—all versionsno fix published

4 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • ICSA-21-194-02 CISA6 known affected

    Schneider Electric Modicon Controllers and Software (Update A)

    EcoStruxure Process Expert: all versions Including all versions of EcoStruxure Hybrid DCS (former name of EcoStruxure Process Expert) · EcoStruxure Control Expert: v15.0 SP1 · Modicon M340 CPU (part numbers BMXP34*): all versions · +3 more

  • ICSA-21-021-05 CISA11 known affected

    WAGO M&M Software fdtCONTAINER (Update C)

    fdtCONTAINER: Versions between 4.6.0 and 4.6.20304.x · dtmINSPECTOR: Version 3 (Based on FDT 1.2.x) · fdtCONTAINER: Versions between 3.5.0 and 3.5.20304.x · +8 more

Full record on NVD

Fix

  1. Update Wago fdtcontainer application to 4.5
  2. Vendor fix CISA ICSA-21-021-05 · 11 productsUpdate the fdtCONTAINER component/fdtCONTAINER application to a version that provides a more secure deserialization of the project data. This version will still use a deprecated serialization technology but will fix the currently known attack vector and will be compatible with existing, non-manipul…
  3. Vendor fix CISA ICSA-21-021-05 · 11 productsUpdate the fdtCONTAINER component/fdtCONTAINER application to a version (fdtCONTAINER component: 3.7 or newer, fdtCONTAINER application: 4.7 or newer) that provides a secure deserialization of the project data with an updated serialization technology. This will break the compatibility to existing, …
  4. Mitigation from the vendor CISA ICSA-21-194-02 · 6 productsSchneider Electric provides detailed mitigation information for each of the affected products in their own advisory, for more information about these issues, please refer to the original Schneider Electric publication SEVD-2021-194-01.
  5. Mitigation from the vendor CISA ICSA-21-021-05 · 11 productsThe CERT@VDE advisory for M&M Software also recommends the following mitigation practices:
  6. Mitigation from the vendor CISA ICSA-21-021-05 · 11 productsExchange project data only via secure exchange services.
  7. Mitigation from the vendor CISA ICSA-21-021-05 · 11 productsUse appropriate means to protect the project storage from unauthorized manipulation.

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • CNACVSS 3.17.3read 2026-10-23
  • NVDCVSS 3.17.8read 2026-10-23
  • NVDCVSS 2.06.8read 2026-10-23
  • CNAweakness (CWE)CWE-502read 2026-10-23
  • NVDweakness (CWE)CWE-502read 2026-10-23
  • FIRST EPSSEPSS score1.4 %2026-10-22

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2021-01-22
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2020-12525?

M&M Software fdtCONTAINER Component in versions below 3.5.20304.x and between 3.6 and 3.6.20304.x is vulnerable to deserialization of untrusted data in its project storage.

Is CVE-2020-12525 actively exploited?

Active exploitation of CVE-2020-12525 has not been confirmed. Its EPSS score was 1.4% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-12525?

CVE-2020-12525 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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