VulnTideExploited vulnerabilities, by vendor. Data as of .
Not in CISA KEVPublished CVSS 10.0 criticalEPSS 2.4% probability of exploitation in 30 days
D-Link

CVE-2026-86296: D-Link DIR-822A udhcpcd serverpacket.c strcpy stack-based overflow

Is it exploited?

Not on CISA's list. CISA has not added it to the Known Exploited Vulnerabilities catalog as of . If CISA adds it, this page shows it as known exploited.

How likely is exploitation in the next 30 days?
2.4%

Up from 1.7% on .

EPSS score, percentile 83.8 of all scored records. A probability estimated by FIRST, not a report of exploitation.

CISA's SSVC assessment in the CVE record lists exploitation as poc.

How severe?
10.0 Critical

CVSS v4.0 base score, given by the CNA

What should I do?

CISA has set no required action, because the vulnerability is not in KEV.

The CVE record links no vendor advisory, patch or mitigation.

Which versions are affected?

Affected

  • A_101

Versions by product

Source: CISA KEV 2026.10.28, as of ; FIRST EPSS, as of ; CVE List, as of . About the data.

What to do

Advisories and patches

The CVE record links no vendor advisory, patch or mitigation.

This summary is based on the CVE record as of . Check the vendor's advisory before you act: affected versions and fixes can change.

Affected products and versions

As listed in the CVE record.

D-Link DIR-822A
StatusVersions
AffectedA_101

Source: CVE List, as of . About the data.

About this vulnerability

A vulnerability was determined in D-Link DIR-822A A_101. This vulnerability affects the function strcpy of the file udhcpcd/serverpacket.c of the component udhcpcd. This manipulation causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized.

Summary: CVE record, as of .

  • CISA has not added CVE-2026-86296 to its Known Exploited Vulnerabilities (KEV) catalog, as of 28 Oct 2026.
  • The CVE record was published on 7 Sep 2026.
  • The CVE record carries a CVSS v4.0 base score of 10.0 (Critical), given by its CNA.
  • FIRST's EPSS model puts the probability of exploitation in the next 30 days at 2.4% (percentile 83.8), as of 29 Oct 2026. EPSS is a statistical estimate, not a report of exploitation.
  • CISA's SSVC assessment in the CVE record: exploitation poc, automatable yes, technical impact total.

Source: CISA KEV 2026.10.28, as of ; CVE List, as of ; FIRST EPSS, as of . About the data.

Description

D-Link DIR-822A udhcpcd serverpacket.c strcpy stack-based overflow

A vulnerability was determined in D-Link DIR-822A A_101. This vulnerability affects the function strcpy of the file udhcpcd/serverpacket.c of the component udhcpcd. This manipulation causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized.

Source: CVE List, as of . About the data.

Weakness

CWE-121, CWE-119

CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record.

Timeline

DateEvent
CVE record published
CVE record last updated

References

6

Known exploited D-Link vulnerabilities

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  • CVE-2022-37055: D-Link Routers Buffer Overflow Vulnerability (added )
  • CVE-2020-25078: D-Link DCS-2530L and DCS-2670L Devices Unspecified Vulnerability (added )
  • CVE-2020-25079: D-Link DCS-2530L and DCS-2670L Command Injection Vulnerability (added )
  • CVE-2022-40799: D-Link DNR-322L Download of Code Without Integrity Check Vulnerability (added )