TOTOLINK A702R 4.0.0-B20211108.1423 /boafrm/formFilter sub_4162DC ip6addr buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in TOTOLINK A702R 4.0.0-B20211108.1423. Affected by this issue is the function sub_4162DC of the file /boafrm/formFilter. This manipulation of the argument ip6addr causes buffer overflow. This vulnerability is handled as CVE-2025-9779. The attack can be initiated remotely. Additionally, an exploit exists.

Detailsinfo

A vulnerability was found in TOTOLINK A702R 4.0.0-B20211108.1423. It has been declared as critical. Affected by this vulnerability is the function sub_4162DC of the file /boafrm/formFilter. The manipulation of the argument ip6addr 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 advisory is shared at github.com. This vulnerability is known as CVE-2025-9779. The exploitation appears to be easy. The attack can be launched remotely. Technical details and also a public exploit are known.

It is possible to download the exploit at github.com. It is declared as proof-of-concept.

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-2025-26343). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.4

VulDB Base Score: 8.8
VulDB Temp Score: 8.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.8
CNA Vector: 🔒

CVSSv2info

AVACAuCIA
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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: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

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

09/01/2025 Advisory disclosed
09/01/2025 +0 days VulDB entry created
09/01/2025 +0 days VulDB entry last update

Sourcesinfo

Vendor: totolink.net

Advisory: github.com
Status: Not defined

CVE: CVE-2025-9779 (🔒)
GCVE (CVE): GCVE-0-2025-9779
GCVE (VulDB): GCVE-100-322081
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 09/01/2025 07:14
Updated: 09/01/2025 16:53
Changes: 09/01/2025 07:14 (56), 09/01/2025 15:45 (31), 09/01/2025 16:53 (1)
Complete: 🔍
Submitter: rew1X
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #640987: TOTOLINK A720R V4.0.0-B20211108.1423 Buffer Overflow (by rew1X)

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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