TRENDnet TEW-821DAP 1.12B01 Firmware Udpate auto_update_firmware str buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.5$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in TRENDnet TEW-821DAP 1.12B01. The affected element is the function auto_update_firmware of the component Firmware Udpate. The manipulation of the argument str results in buffer overflow. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is cataloged as CVE-2026-7607. The attack may be launched remotely. There is no exploit available. The vendor explains: "That firmware version will only work on our hardware version v1.xR. We have already EOL that product 8 years ago and are no longer selling".

Detailsinfo

A vulnerability was found in TRENDnet TEW-821DAP 1.12B01. It has been classified as critical. Affected is the function auto_update_firmware of the component Firmware Udpate. The manipulation of the argument str with an unknown input leads to a buffer overflow vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-7607. The exploitability is told to be easy. It is possible to launch the attack remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 05/02/2026).

The vendor explains: "That firmware version will only work on our hardware version v1.xR. We have already EOL that product 8 years ago and are no longer selling".

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-2026-26761). Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.5

VulDB Base Score: 8.8
VulDB Temp Score: 8.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

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

05/01/2026 Advisory disclosed
05/01/2026 +0 days VulDB entry created
05/02/2026 +1 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2026-7607 (🔒)
GCVE (CVE): GCVE-0-2026-7607
GCVE (VulDB): GCVE-100-360564
EUVD: 🔒

Entryinfo

Created: 05/01/2026 14:12
Updated: 05/02/2026 12:10
Changes: 05/01/2026 14:12 (55), 05/02/2026 12:10 (1)
Complete: 🔍
Submitter: IOT_Res
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #806214: Trendnet TEW-821DAP v1.12B01 CWE-120 Buffer Copy without Checking Size of Input (by IOT_Res)

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