CVE-2020-7925

mediumpriority · track · 31EPSS 0.017 · 77 %ileCHEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
1.69% (77th) EPSS
CVSS 5 · medium
Is it mine?
7 products
Check your exposure
Who says so?
6 sources
cnnvd · enisa_euvd · abb_psirt · cisa_csaf_ot

EPSS · scored 2026-10-27

Incorrect validation of user input in the role name parser may lead to use of uninitialized memory allowing an unauthenticated attacker to use a specially crafted request to cause a denial of service. This issue affects MongoDB Server v4.4 versions prior to 4.4.0-rc12; MongoDB Server v4.2 versions prior to 4.2.9.

01

remediations

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

No vendor fix yet; a mitigation is available.

  • MitigationIIoT services with MongoDB 4.2 installed on ABB Ability Zenon /allabb_psirt

    ABB recommends the following mitigation measures: - Replace bundled MongoDB with a supported version if IIoT services are required: - Where IIoT functionality is required, the bundled MongoDB instance can be replaced with a supported and patched version through manual configuration. - The following zenon online help section explains the process of installing and using your own MongoDB database: zenHelpViewer - Uninstall IIoT Services wherever it’s not required: - If IIoT Services are not required, they can be removed using the Control panel uninstaller. This eliminates the dependency on MongoDB without affecting other zenon components. Refer to section “General security recommendations” for further advise on how to keep your system secure.

  • MitigationIIoT services with MongoDB 4.2 installed on ABB Ability Zenon /allcisa_csaf_ot

    ABB recommends the following mitigation measures: - Replace bundled MongoDB with a supported version if IIoT services are required: - Where IIoT functionality is required, the bundled MongoDB instance can be replaced with a supported and patched version through manual configuration. - The following zenon online help section explains the process of installing and using your own MongoDB database: zenHelpViewer - Uninstall IIoT Services wherever it’s not required: - If IIoT Services are not required, they can be removed using the Control panel uninstaller. This eliminates the dependency on MongoDB without affecting other zenon components. Refer to section “General security recommendations” for further advise on how to keep your system secure.

02

cvss

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

7.5
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:F/RL:U/RC:Csecondary · CISA US
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · cna@mongodb.comexploitability 3.9 · impact 3.6
v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:F/RL:U/RC:Csecondary · ABB PSIRT
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimaryCWE-475USCWE-475USCWE-475US
04

affected products (7)

Products and version ranges known to be affected.

05

advisories (3)

Vendor and ecosystem advisories describing this.

  • 9AKK108472A9037ABB AbilityTM zenon Security Risk Due to End-of-Life MongoDB Component2026-07-30csaf · abb_psirtCH

    ABB is aware of publicly reported vulnerabilities affecting MongoDB 4.2, which is bundled within the IIoT Services of the affected product versions. MongoDB 4.2 has reached end-of-life and contains multiple known security vulnerabilities. An attacker who successfully exploits these vulnerabilities could potentially access sensitive information, cause denial of service, or disrupt system availability.

  • ICSA-26-218-01ABB Ability Zenon2026-07-30icsa · cisa_csaf_otUS

    ABB is aware of publicly reported vulnerabilities affecting MongoDB 4.2, which is bundled within the IIoT Services of the affected product versions. MongoDB 4.2 has reached end-of-life and contains multiple known security vulnerabilities. An attacker who successfully exploits these vulnerabilities could potentially access sensitive information, cause denial of service, or disrupt system availability.

  • BIT-mongodb-2020-7925Denial of Service when processing malformed Role names2024-03-06vendor · osvUS

    Incorrect validation of user input in the role name parser may lead to use of uninitialized memory allowing an unauthenticated attacker to use a specially crafted request to cause a denial of service. This issue affects MongoDB Server v4.4 versions prior to 4.4.0; MongoDB Server v4.2 versions prior to 4.2.9.

06

also known as (3)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdabb_psirtcisa_csaf_otnvdosvNVDCVE.orgMITRE
published 2020-11-23modified 2026-06-17
09

references (7)

External citations — patches, advisories, analysis.

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