How severe is CVE-2023-39667?

CVE-2023-39667 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-2023-39667 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-39667?

CVE-2023-39667 affects Dlink Dir-868l Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-39667?

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-2023-39667 published?

CVE-2023-39667 was published on 2023-08-18 and last updated on 2026-06-17.

CVE-2023-39667

CVE-2023-39667 is a critical-severity vulnerability in Dlink Dir-868l 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-120.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Dlink Dir-868l Firmware
Published: 2023-08-18
Last modified: 2026-06-17

Description

D-Link DIR-868L fw_revA_1-12_eu_multi_20170316 was discovered to contain a buffer overflow via the param_2 parameter in the FUN_0000acb4 function.

Frequently asked questions

What is CVE-2023-39667?: D-Link DIR-868L fw_revA_1-12_eu_multi_20170316 was discovered to contain a buffer overflow via the param_2 parameter in the FUN_0000acb4 function.
How severe is CVE-2023-39667?: CVE-2023-39667 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-2023-39667 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-39667?: CVE-2023-39667 affects Dlink Dir-868l Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-39667?: 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-2023-39667 published?: CVE-2023-39667 was published on 2023-08-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:dlink:dir-868l_firmware:1.12_eu_multi_20170316:*:*:*:*:*:*:*

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