CVE-2023-39671Network attack vector

Unauthenticated memory corruption via FUN_0001be68 buffer overflow

Published Aug 18, 2023 · Updated Oct 7, 2024

Buffer overflow in FUN_0001be68 in D-Link DIR-880L A1 firmware 1.07b08 allows remote attackers to corrupt memory via network input. The record identifies FUN_0001be68 as the vulnerable locus but does not disclose the input field, destination buffer, or unchecked operation. No authentication or user interaction is required, but the public record does not establish whether exploitation causes a crash or code execution.

CVSS severity9.8
Critical
EPSS probability1.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in FUN_0001be68 in D-Link DIR-880L A1 firmware 1.07b08 allows remote attackers to corrupt memory via network input. The record identifies FUN_0001be68 as the vulnerable locus but does not disclose the input field, destination buffer, or unchecked operation. No authentication or user interaction is required, but the public record does not establish whether exploitation causes a crash or code execution.

The record

CVE
CVE-2023-39671
Published
Aug 18, 2023
Updated
Oct 7, 2024
Vendor
D-Link
Product
DIR-880L
Classifications
CWE-120
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 18, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 7, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=a1_fw107wwb08

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

D-Link · DIR-880Lversion=a1_fw107wwb08

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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