CVE-2020-14511

highpriority · track · 39EPSS 0.014 · 72 %ileEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.40% (72nd) EPSS

CVSS 7.5 · high

Is it mine?

11 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · scored 2026-10-27

Malicious operation of the crafted web browser cookie may cause a stack-based buffer overflow in the system web server on the EDR-G902 and EDR-G903 Series Routers (versions prior to 5.4).

remediations

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

No vendor fix yet; a mitigation is available.

MitigationEDR-G902 Seriescisa_csaf_ot
Install firmware patch. Patches may be downloaded from Moxa's security advisory page.
https://www.moxa.com/en/support/support/security-advisory/edr-g902-g903-series-secure-routers-vulnerabilities
MitigationEDR-G903 Seriescisa_csaf_ot
Install firmware patch. Patches may be downloaded from Moxa's security advisory page.
https://www.moxa.com/en/support/support/security-advisory/edr-g902-g903-series-secure-routers-vulnerabilities

cvss

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

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

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

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.09.8criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · CISA US

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimaryCWE-121USCWE-121USCWE-121US

affected products (11)

Products and version ranges known to be affected.

EDR-G902 Series: firmware versions 5.4 and priorall versionscisa_csaf_otUS
EDR-G903 Series: firmware versions 5.4 and priorall versionscisa_csaf_otUS
Moxa EDR-G902 Series≤ 5.4cisa_csaf_otUS
Moxa EDR-G903 Series≤ 5.4cisa_csaf_otUS
n/a EDR-G902 and EDR-G903 Series Routers≤ Versions prior to 5.4enisa_euvdEU
Moxa Inc. Moxa EDR-G902 Series≤ 5.4fstec_bduRU
Moxa Inc. Moxa EDR-G903 Series≤ 5.4fstec_bduRU
moxa edr-g902 firmware≤ 5.4nvdUScpe:2.3:o:moxa:edr-g902_firmware:*:*:*:*:*:*:*:*
moxa edr-g902-t firmware≤ 5.4nvdUScpe:2.3:o:moxa:edr-g902-t_firmware:*:*:*:*:*:*:*:*
moxa edr-g903 firmware≤ 5.4nvdUScpe:2.3:o:moxa:edr-g903_firmware:*:*:*:*:*:*:*:*
moxa edr-g903-t firmware≤ 5.4nvdUScpe:2.3:o:moxa:edr-g903-t_firmware:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-20-196-02Moxa EDR-G902 and EDR-G903 Series Routers2020-07-14icsa · cisa_csaf_otUS
Successful exploitation of this vulnerability could crash the device being accessed; a buffer overflow condition may allow remote code execution.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisa_csaf_ot nvd NVD CVE.org MITRE

published 2020-07-15modified 2026-06-17

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+16123 more

references (6)

External citations — patches, advisories, analysis.

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