No exploitation reported

CVE-2020-14511

No exploitation reported by the sources we read.

Published2020-07-15
WeaknessCWE-121 · CWE-787

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

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).

Timeline

dates in UTC

2020-07-1513:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 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-2020-14511?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-14511?format=csv
TAXII collection of exploited CVEs
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Versions per branch

NVD

Moxa edr-g902 firmwareversion to verify

Branch	Affected	Fixed in	Source
5.4	≤ 5.4	no fix published	NVD

Moxa edr-g902-t firmwareversion to verify

Branch	Affected	Fixed in	Source
5.4	≤ 5.4	no fix published	NVD

Moxa edr-g903 firmwareversion to verify

Branch	Affected	Fixed in	Source
5.4	≤ 5.4	no fix published	NVD

1 more product 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-20-196-02 CISA2 known affected
Moxa EDR-G902 and EDR-G903 Series Routers
EDR-G902 Series: firmware versions 5.4 and prior · EDR-G903 Series: firmware versions 5.4 and prior

Full record on NVD

Fix

Mitigation from the vendor CISA ICSA-20-196-02 · 2 productsInstall firmware patch. Patches may be downloaded from Moxa's security advisory page.
Mitigation from the vendor CISA ICSA-20-196-02 · 2 productsPlease see Moxa's security advisory for more information.

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.19.8read 2026-10-23
NVDCVSS 2.07.5read 2026-10-23
CNAweakness (CWE)CWE-121read 2026-10-23
NVDweakness (CWE)CWE-787read 2026-10-23
FIRST EPSSEPSS score1.4 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2020-07-15
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2020-14511?

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).

Is CVE-2020-14511 actively exploited?

Active exploitation of CVE-2020-14511 has not been confirmed. Its EPSS score was 1.4% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-14511?

CVE-2020-14511 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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