VDB-328044 · CVE-2025-11633 · EUVD-2025-33892

Tomofun Furbo 360/Furbo Mini HTTP Traffic collect_logs.sh upload_file_to_s3 certificate validation

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.3	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as critical has been found in Tomofun Furbo 360 and Furbo Mini. This affects the function upload_file_to_s3 of the file collect_logs.sh of the component HTTP Traffic Handler. The manipulation results in certificate validation. This vulnerability is cataloged as CVE-2025-11633. The attack may be launched remotely. Furthermore, there is an exploit available. The firmware versions determined to be affected are Furbo 360 up to FB0035_FW_036 and Furbo Mini up to MC0020_FW_074. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Tomofun Furbo 360 and Furbo Mini (Firmware Software) (the affected version unknown). Affected is the function upload_file_to_s3 of the file collect_logs.sh of the component HTTP Traffic Handler. The manipulation with an unknown input leads to a certificate validation vulnerability. CWE is classifying the issue as CWE-295. The product does not validate, or incorrectly validates, a certificate. This is going to have an impact on integrity.

The bug was discovered 05/15/2025. The weakness was shared by Calvin Star, Julian B (skelet4r and dead1nfluence) with Software Secured. The vendor cooperated in the coordination of the public release. The Furbo 360 and Furbo mini both utilize a debug logging service called "Firehose" which executes a specific file called collect_logs.sh in order to collect and upload device data to their servers. This collect_logs.sh script has a vulnerable function called upload_file_to_s3() which utilizes the curl command with the -k argument in order to disable certificate verification on the request. This vulnerability means an attacker located upstream from the Furbo device can intercept the HTTPS traffic and decrypt it by impersonating the server and certificate. As a result, the attacker can decrypt the traffic and review the firehose logs which are transmitted to the server. These base64 encoded logs contain data about the user's account ID, device ID, configurations, and other information. This vulnerability is traded as CVE-2025-11633. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details and a private exploit are known. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/31/2025). The MITRE ATT&CK project declares the attack technique as T1587.003. The reason for this vulnerability is this part of code:

upload_file_to_s3()
{
        target="$1"
        if [ ! -f "$target" ]; then
                dlog "not found tarfile, skip upload s3"
                return 1
        fi

        bucket=furbo2-device-debug-log
        uri="https://furbo2-device-debug-log.s3.amazonaws.com"
        datestr=`/bin/date +"%Y%m%d_%H%M%S"`
        addr_pn="/sys/class/net/wlan0/address"
        if [ -f $addr_pn ]; then
                did="`/bin/cat $addr_pn | tr -d ':' | tr 'a-z' 'A-Z'`"
        else
                did="na"
        fi
        fn="${did}/${did}_${datestr}.tgz"

        dateValue=`/bin/date -R`
        contentType="application/x-compressed-tar"

        /usr/bin/curl -k --connect-timeout 60 -X PUT -T "$target" \
                -H "Host: ${bucket}.s3.amazonaws.com" \
                -H "Date: ${dateValue}" \
                -H "Content-Type: ${contentType}" \
                -H 'x-amz-grant-full-control: id="ad3b[REDACTED]a9a"' \
                "${uri}/$fn"
        ret=$?
        if [ $ret -eq 0 ]; then
                dlog "[s3] put file $fn successfully"
        else
                dlog "[s3] put file $fn failure"
        fi
        return $ret
}

A private exploit has been developed by Aapo Oksman. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 149 days. During that time the estimated underground price was around . The vendor was contacted early about this disclosure but did not respond in any way. The firmware versions determined to be affected are Furbo 360 up to FB0035_FW_036 and Furbo Mini up to MC0020_FW_074. Although a dedicated exploit is not publicly available for this vulnerability several open source tools can be used in order to demonstrate this attack and confirm this vulnerability. Aapo Oksman has developed and published a tool called certmitm which can be used to test for certificate validation vulnerabilities of TLS connections made by a client device or an application. In order to use this tool to exploit this vulnerability you can use any sort of proxying tool to forward TLS traffic from the device to certmitm where the TLS connection can be tested for various configuration issues. In our research we used a combination for mitmrouter and certmitm in order to locate and exploit this vulnerability.

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-2025-33892). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Firmware Software

Vendor

Tomofun

Name

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: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.7
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔒

CNA Base Score: 3.7
CNA Vector: 🔒

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Certificate validation
CWE: CWE-295 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Private
Status: Proof-of-Concept
Author: Aapo Oksman

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

05/15/2025 Vulnerability found
06/21/2025 +37 days Vendor informed
07/03/2025 +11 days Vendor acknowledged
10/11/2025 +99 days Advisory disclosed
10/11/2025 +0 days VulDB entry created
10/31/2025 +20 days VulDB entry last update

Sourcesinfo

Researcher: Calvin Star, Julian B (skelet4r, dead1nfluence)
Organization: Software Secured
Status: Not defined
Coordinated: 🔒

CVE: CVE-2025-11633 (🔒)
GCVE (CVE): GCVE-0-2025-11633
GCVE (VulDB): GCVE-100-328044
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 10/11/2025 20:38
Updated: 10/31/2025 04:51
Changes: 10/11/2025 20:38 (51), 10/12/2025 14:23 (29), 10/12/2025 16:23 (1), 10/13/2025 22:33 (4), 10/13/2025 22:34 (17), 10/13/2025 22:37 (5), 10/31/2025 04:51 (13)
Complete: 🔍
Submitter: jTag Labs
Committer: jTag Labs
Cache ID: 216::103

Submitinfo

Accepted

Submit #661352: Tomofun Furbo 360, Furbo Mini Furbo 360 (≤ FB0035_FW_036), Furbo Mini (≤ MC0020_FW_074) Improper Certificate Validation (by jTag Labs)