How severe is CVE-2024-27656?

CVE-2024-27656 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-27656 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-27656?

CVE-2024-27656 affects Dlink Dir-823g Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-27656?

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.

Does CVE-2024-27656 have an EU (EUVD) identifier?

Yes. CVE-2024-27656 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-24850.

When was CVE-2024-27656 published?

CVE-2024-27656 was published on 2024-02-29 and last updated on 2026-06-17.

CVE-2024-27656

CVE-2024-27656 is a high-severity vulnerability in Dlink Dir-823g Firmware with a CVSS 3.x base score of 8.8. 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-121.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-24850
Weakness: CWE-121
Affected product: Dlink Dir-823g Firmware
Published: 2024-02-29
Last modified: 2026-06-17

Description

D-Link DIR-823G A1V1.0.2B05 was discovered to contain a buffer overflow via the Cookie parameter. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input, and possibly remote code execution.

Frequently asked questions

What is CVE-2024-27656?: D-Link DIR-823G A1V1.0.2B05 was discovered to contain a buffer overflow via the Cookie parameter. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input, and possibly remote code execution.
How severe is CVE-2024-27656?: CVE-2024-27656 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-27656 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-27656?: CVE-2024-27656 affects Dlink Dir-823g Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-27656?: 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.
Does CVE-2024-27656 have an EU (EUVD) identifier?: Yes. CVE-2024-27656 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-24850.
When was CVE-2024-27656 published?: CVE-2024-27656 was published on 2024-02-29 and last updated on 2026-06-17.

References

https://calm-healer-839.notion.site/D-LINK-DIR-823G-OOBW-0x41E2A0-8ea57277c7cd4ea18dbc40bcb41a98f2?pvs=4

Affected products (1)

cpe:2.3:o:dlink:dir-823g_firmware:1.0.2b05:*:*:*:*:*:*:*

More vulnerabilities in Dlink Dir-823g Firmware

CVE-2023-43241 — Critical (CVSS 9.8): D-Link DIR-823G v1.0.2B05 was discovered to contain a stack overflow via parameter TXPower and GuardInt in…
CVE-2023-43235 — Critical (CVSS 9.8): D-Link DIR-823G v1.0.2B05 was discovered to contain a stack overflow via parameter StartTime and EndTime in…
CVE-2023-26616 — Critical (CVSS 9.8): D-Link DIR-823G firmware version 1.02B05 has a buffer overflow vulnerability, which originates from the URL field in…
CVE-2023-26613 — Critical (CVSS 9.8): An OS command injection vulnerability in D-Link DIR-823G firmware version 1.02B05 allows unauthorized attackers to…
CVE-2023-26612 — Critical (CVSS 9.8): D-Link DIR-823G firmware version 1.02B05 has a buffer overflow vulnerability, which originates from the HostName field…
CVE-2023-29665 — Critical (CVSS 9.8): D-Link DIR823G_V1.0.2B05 was discovered to contain a stack overflow via the NewPassword parameters in SetPasswdSettings.

All CVEs affecting Dlink Dir-823g Firmware →

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