How severe is CVE-2023-27720?

CVE-2023-27720 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-2023-27720 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-27720?

CVE-2023-27720 affects Dlink Dir-878 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-27720?

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-2023-27720 published?

CVE-2023-27720 was published on 2023-04-09 and last updated on 2026-06-17.

CVE-2023-27720

CVE-2023-27720 is a critical-severity vulnerability in Dlink Dir-878 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-787.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Dlink Dir-878 Firmware
Published: 2023-04-09
Last modified: 2026-06-17

Description

D-Link DIR878 1.30B08 was discovered to contain a stack overflow in the sub_48d630 function. This vulnerability allows attackers to cause a Denial of Service (DoS) or execute arbitrary code via a crafted payload.

Frequently asked questions

What is CVE-2023-27720?: D-Link DIR878 1.30B08 was discovered to contain a stack overflow in the sub_48d630 function. This vulnerability allows attackers to cause a Denial of Service (DoS) or execute arbitrary code via a crafted payload.
How severe is CVE-2023-27720?: CVE-2023-27720 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-2023-27720 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-27720?: CVE-2023-27720 affects Dlink Dir-878 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-27720?: 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-2023-27720 published?: CVE-2023-27720 was published on 2023-04-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:dlink:dir-878_firmware:1.30b08:-:*:*:*:*:*:*

More vulnerabilities in Dlink Dir-878 Firmware

CVE-2023-24800 — Critical (CVSS 9.8): D-Link DIR878 DIR_878_FW120B05 was discovered to contain a stack overflow in the sub_495220 function. This…
CVE-2023-24799 — Critical (CVSS 9.8): D-Link DIR878 DIR_878_FW120B05 was discovered to contain a stack overflow in the sub_48AF78 function. This…
CVE-2023-24798 — Critical (CVSS 9.8): D-Link DIR878 DIR_878_FW120B05 was discovered to contain a stack overflow in the sub_475FB0 function. This…
CVE-2022-44801 — Critical (CVSS 9.8): D-Link DIR-878 1.02B05 is vulnerable to Incorrect Access Control.
CVE-2022-44202 — Critical (CVSS 9.8): D-Link DIR878 1.02B04 and 1.02B05 are vulnerable to Buffer Overflow.
CVE-2022-43184 — Critical (CVSS 9.8): D-Link DIR878 1.30B08 Hotfix_04 was discovered to contain a command injection vulnerability via the component…

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