How severe is CVE-2025-25891?

CVE-2025-25891 has a CVSS 3.x base score of 5.7, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-25891 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-25891?

CVE-2025-25891 affects Dlink Dsl-3782 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-25891?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-25891 have an EU (EUVD) identifier?

Yes. CVE-2025-25891 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-4682.

When was CVE-2025-25891 published?

CVE-2025-25891 was published on 2025-02-18 and last updated on 2026-06-17.

CVE-2025-25891

CVE-2025-25891 is a medium-severity vulnerability in Dlink Dsl-3782 Firmware with a CVSS 3.x base score of 5.7. 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: Medium (CVSS 3.x base score 5.7)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-4682
Weakness: CWE-121
Affected product: Dlink Dsl-3782 Firmware
Published: 2025-02-18
Last modified: 2026-06-17

Description

A buffer overflow vulnerability was discovered in D-Link DSL-3782 v1.01, triggered by the destination, netmask and gateway parameters. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted packet.

Frequently asked questions

What is CVE-2025-25891?: A buffer overflow vulnerability was discovered in D-Link DSL-3782 v1.01, triggered by the destination, netmask and gateway parameters. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted packet.
How severe is CVE-2025-25891?: CVE-2025-25891 has a CVSS 3.x base score of 5.7, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-25891 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-25891?: CVE-2025-25891 affects Dlink Dsl-3782 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-25891?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-25891 have an EU (EUVD) identifier?: Yes. CVE-2025-25891 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-4682.
When was CVE-2025-25891 published?: CVE-2025-25891 was published on 2025-02-18 and last updated on 2026-06-17.

References

https://github.com/2664521593/mycve/blob/main/BOF_in_D-Link_DSL-3782_4.pdf

Affected products (1)

cpe:2.3:o:dlink:dsl-3782_firmware:1.01:*:*:*:*:*:*:*

More vulnerabilities in Dlink Dsl-3782 Firmware

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CVE-2022-34527 — High (CVSS 8.8): D-Link DSL-3782 v1.03 and below was discovered to contain a command injection vulnerability via the function…
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