CVE-2024-21798

ELECOM wireless LAN routers contain a cross-site scripting vulnerability. Assume that a malicious administrative user configures the affected product with specially crafted content. When another administrative user logs in and operates the product, an arbitrary script may be executed on the web browser. Note that WMC-X1800GST-B is also included in e-Mesh Starter Kit "WMC-2LX-B".

Published: 2024-02-28 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-21798 is rated Moderate Risk (43.3/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.29%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2024-21798

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.39% 1.29% +0.90%
2 2025-11-21 0.46% 0.39% -0.07%
3 2025-11-18 — 0.46% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-21798

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.8 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 1.7 2.7 [email protected]
4.8 3.0 MEDIUM
CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 1.7 2.7 [email protected]

Weakness enumeration for CVE-2024-21798

Affected software / configurations for CVE-2024-21798

Vendor Product Version Raw CPE
elecom wrc-1167gs2-b_firmware < 1.73 cpe:2.3:o:elecom:wrc-1167gs2-b_firmware:*:*:*:*:*:*:*:*
elecom wrc-1167gs2h-b_firmware < 1.73 cpe:2.3:o:elecom:wrc-1167gs2h-b_firmware:*:*:*:*:*:*:*:*
elecom wrc-1167gst2_firmware < 1.34 cpe:2.3:o:elecom:wrc-1167gst2_firmware:*:*:*:*:*:*:*:*
elecom wrc-2533gs2-b_firmware < 1.68 cpe:2.3:o:elecom:wrc-2533gs2-b_firmware:*:*:*:*:*:*:*:*
elecom wrc-2533gs2-w_firmware < 1.68 cpe:2.3:o:elecom:wrc-2533gs2-w_firmware:*:*:*:*:*:*:*:*
elecom wrc-2533gs2v-b_firmware < 1.68 cpe:2.3:o:elecom:wrc-2533gs2v-b_firmware:*:*:*:*:*:*:*:*
elecom wrc-2533gst2_firmware < 1.31 cpe:2.3:o:elecom:wrc-2533gst2_firmware:*:*:*:*:*:*:*:*
elecom wrc-x3200gst3-b_firmware < 1.27 cpe:2.3:o:elecom:wrc-x3200gst3-b_firmware:*:*:*:*:*:*:*:*
elecom wrc-g01-w_firmware < 1.26 cpe:2.3:o:elecom:wrc-g01-w_firmware:*:*:*:*:*:*:*:*
elecom wmc-x1800gst-b_firmware < 1.42 cpe:2.3:o:elecom:wmc-x1800gst-b_firmware:*:*:*:*:*:*:*:*

References for CVE-2024-21798

cvelogic Threat Intelligence