How severe is CVE-2018-10996?

CVE-2018-10996 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-10996 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-10996?

CVE-2018-10996 affects D-link Dir-629-b Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-10996?

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

When was CVE-2018-10996 published?

CVE-2018-10996 was published on 2018-05-12 and last updated on 2026-06-17.

CVE-2018-10996

CVE-2018-10996 is a critical-severity vulnerability in D-link Dir-629-b Firmware with a CVSS 3.x base score of 9.8. 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-119.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 5% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: D-link Dir-629-b Firmware
Published: 2018-05-12
Last modified: 2026-06-17

Description

The weblogin_log function in /htdocs/cgibin on D-Link DIR-629-B1 devices allows attackers to execute arbitrary code or cause a denial of service (buffer overflow) via a session.cgi?ACTION=logout request involving a long REMOTE_ADDR environment variable.

Frequently asked questions

What is CVE-2018-10996?: The weblogin_log function in /htdocs/cgibin on D-Link DIR-629-B1 devices allows attackers to execute arbitrary code or cause a denial of service (buffer overflow) via a session.cgi?ACTION=logout request involving a long REMOTE_ADDR environment variable.
How severe is CVE-2018-10996?: CVE-2018-10996 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-10996 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-10996?: CVE-2018-10996 affects D-link Dir-629-b Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-10996?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-10996 published?: CVE-2018-10996 was published on 2018-05-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:d-link:dir-629-b_firmware:-:*:*:*:*:*:*:*

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