How severe is CVE-2018-5371?

CVE-2018-5371 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-5371 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 42% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-5371?

CVE-2018-5371 primarily affects D-link Dsl-2540u Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-5371?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-5371 published?

CVE-2018-5371 was published on 2018-01-12 and last updated on 2026-06-17.

CVE-2018-5371

CVE-2018-5371 is a high-severity vulnerability in D-link Dsl-2540u Firmware with a CVSS 3.x base score of 8.8. Its EPSS exploit-prediction score of 42% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-78.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
EPSS exploit prediction: 42% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: D-link Dsl-2540u Firmware
Published: 2018-01-12
Last modified: 2026-06-17

Description

diag_ping.cmd on D-Link DSL-2640U devices with firmware IM_1.00 and ME_1.00, and DSL-2540U devices with firmware ME_1.00, allows authenticated remote attackers to execute arbitrary OS commands via shell metacharacters in the ipaddr field of an HTTP GET request.

Frequently asked questions

What is CVE-2018-5371?: diag_ping.cmd on D-Link DSL-2640U devices with firmware IM_1.00 and ME_1.00, and DSL-2540U devices with firmware ME_1.00, allows authenticated remote attackers to execute arbitrary OS commands via shell metacharacters in the ipaddr field of an HTTP GET request.
How severe is CVE-2018-5371?: CVE-2018-5371 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-5371 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 42% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-5371?: CVE-2018-5371 primarily affects D-link Dsl-2540u Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-5371?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-5371 published?: CVE-2018-5371 was published on 2018-01-12 and last updated on 2026-06-17.

References

https://www.iplantom.com/2018/01/10/dsl2640U/

Affected products (3)

cpe:2.3:o:d-link:dsl-2540u_firmware:me_1.00:*:*:*:*:*:*:*
cpe:2.3:o:d-link:dsl-2640u_firmware:im_1.00:*:*:*:*:*:*:*
cpe:2.3:o:d-link:dsl-2640u_firmware:me_1.00:*:*:*:*:*:*:*

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