How severe is CVE-2018-18636?

CVE-2018-18636 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2018-18636 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-18636?

CVE-2018-18636 affects D-link Dsl-2640t Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-18636?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-18636 published?

CVE-2018-18636 was published on 2018-10-24 and last updated on 2026-06-17.

CVE-2018-18636

CVE-2018-18636 is a medium-severity vulnerability in D-link Dsl-2640t Firmware with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: D-link Dsl-2640t Firmware
Published: 2018-10-24
Last modified: 2026-06-17

Description

XSS exists in cgi-bin/webcm on D-link DSL-2640T routers via the var:RelaodHref or var:conid parameter.

Frequently asked questions

What is CVE-2018-18636?: XSS exists in cgi-bin/webcm on D-link DSL-2640T routers via the var:RelaodHref or var:conid parameter.
How severe is CVE-2018-18636?: CVE-2018-18636 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2018-18636 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-18636?: CVE-2018-18636 affects D-link Dsl-2640t Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-18636?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-18636 published?: CVE-2018-18636 was published on 2018-10-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:d-link:dsl-2640t_firmware:-:*:*:*:*:*:*:*

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