How severe is CVE-2023-29856?

CVE-2023-29856 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-2023-29856 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-29856?

CVE-2023-29856 affects Dlink Dir-868l Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-29856?

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-2023-29856 published?

CVE-2023-29856 was published on 2023-05-02 and last updated on 2026-06-17.

CVE-2023-29856

CVE-2023-29856 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% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Dlink Dir-868l Firmware
Published: 2023-05-02
Last modified: 2026-06-17

Description

D-Link DIR-868L Hardware version A1, firmware version 1.12 is vulnerable to Buffer Overflow. The vulnerability is in scandir.sgi binary.

Frequently asked questions

What is CVE-2023-29856?: D-Link DIR-868L Hardware version A1, firmware version 1.12 is vulnerable to Buffer Overflow. The vulnerability is in scandir.sgi binary.
How severe is CVE-2023-29856?: CVE-2023-29856 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-2023-29856 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-29856?: CVE-2023-29856 affects Dlink Dir-868l Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-29856?: 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-2023-29856 published?: CVE-2023-29856 was published on 2023-05-02 and last updated on 2026-06-17.

References

Affected products (1)

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

More vulnerabilities in Dlink Dir-868l Firmware

CVE-2026-3485 — Critical (CVSS 9.8): A flaw has been found in D-Link DIR-868L 110b03. This affects the function sub_1BF84 of the component SSDP Service.…
CVE-2025-55583 — Critical (CVSS 9.8): D-Link DIR-868L B1 router firmware version FW2.05WWB02 contains an unauthenticated OS command injection vulnerability…
CVE-2023-39668 — Critical (CVSS 9.8): D-Link DIR-868L fw_revA_1-12_eu_multi_20170316 was discovered to contain a buffer overflow via the param_2 parameter in…
CVE-2023-39667 — Critical (CVSS 9.8): D-Link DIR-868L fw_revA_1-12_eu_multi_20170316 was discovered to contain a buffer overflow via the param_2 parameter in…
CVE-2023-39665 — Critical (CVSS 9.8): D-Link DIR-868L fw_revA_1-12_eu_multi_20170316 was discovered to contain a buffer overflow via the acStack_50 parameter.
CVE-2019-17621 — Critical (CVSS 9.8): The UPnP endpoint URL /gena.cgi in the D-Link DIR-859 Wi-Fi router 1.05 and 1.06B01 Beta01 allows an Unauthenticated…

All CVEs affecting Dlink Dir-868l Firmware →

Other CWE-120 (Classic Buffer Overflow) vulnerabilities

CVE-2025-48611 — Critical (CVSS 10.0): In DeviceId of DeviceId.java, there is a possible desync in persistence due to a missing bounds check. This could lead…
CVE-2026-24823 — Critical (CVSS 10.0): Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in FASTSHIFT…
CVE-2026-24810 — Critical (CVSS 10.0): Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in rethinkdb (src/cjson modules).…
CVE-2026-24800 — Critical (CVSS 10.0): Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in tildearrow…
CVE-2025-9962 — Critical (CVSS 10.0): A buffer overflow vulnerability in Novakon P series allows attackers to gain root permission without prior…
CVE-2010-10016 — Critical (CVSS 10.0): BS.Player version 2.57 (build 1051) contains a vulnerability in its playlist import functionality. When processing .m3u…

Browse all CWE-120 (Classic Buffer Overflow) vulnerabilities →