D-Link DIR-842 fw_revA_1-02_eu_multi_20151008 fgets acStack_120/acStack_220 buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.5$5k-$25k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in D-Link DIR-842 fw_revA_1-02_eu_multi_20151008. Affected by this issue is the function fgets. This manipulation of the argument acStack_120/acStack_220 causes buffer overflow. The identification of this vulnerability is CVE-2023-39666. There is no exploit available.

Detailsinfo

A vulnerability has been found in D-Link DIR-842 fw_revA_1-02_eu_multi_20151008 (Router Operating System) and classified as critical. Affected by this vulnerability is the function fgets. The manipulation of the argument acStack_120/acStack_220 with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

D-Link DIR-842 fw_revA_1-02_eu_multi_20151008 was discovered to contain multiple buffer overflows in the fgets function via the acStack_120 and acStack_220 parameters.

The weakness was shared 08/18/2023. The advisory is shared at github.com. This vulnerability is known as CVE-2023-39666 since 08/07/2023. Technical details are known, but no exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 01/25/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-43367). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.6

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/07/2023 🔍
08/18/2023 +11 days 🔍
08/18/2023 +0 days 🔍
01/25/2026 +891 days 🔍

Sourcesinfo

Vendor: dlink.com

Advisory: github.com
Status: Not defined

CVE: CVE-2023-39666 (🔍)
GCVE (CVE): GCVE-0-2023-39666
GCVE (VulDB): GCVE-100-237469
EUVD: 🔍

Entryinfo

Created: 08/18/2023 08:37
Updated: 01/25/2026 16:15
Changes: 08/18/2023 08:37 (40), 09/13/2023 12:25 (11), 01/25/2026 16:15 (16)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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