VDB-403417 · CVE-2023-46273 · EUVD-2023-60670

Extreme Networks IQ Engine up to 10.6r4 Bonjour Gateway ah_event_send buffer overflow

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.
9.2	$0-$5k	1.22

Summaryinfo

A vulnerability was found in Extreme Networks IQ Engine up to 10.6r4. It has been rated as very critical. This vulnerability affects the function ah_event_send of the component Bonjour Gateway. This manipulation causes buffer overflow. This vulnerability is tracked as CVE-2023-46273. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as very critical was found in Extreme Networks IQ Engine up to 10.6r4. Affected by this vulnerability is the function ah_event_send of the component Bonjour Gateway. The manipulation 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:

Bonjour Gateway in Extreme Networks IQ Engine before 10.6r1a, and through 10.6r4 before 10.6r5, has an ah_bgd buffer overflow via ah_event_send.

The advisory is shared at extremenetworks.com. This vulnerability is known as CVE-2023-46273 since 10/20/2023. The exploitation appears to be easy. The attack can be launched remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/14/2026).

Upgrading to version 10.6r1a or 10.6r5 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-60670). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Extreme Networks

Name

IQ Engine

Version

10.6r4

CPE 2.3info

🔒

CPE 2.2info

🔒

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.4
VulDB Meta Temp Score: 9.2

VulDB Base Score: 9.9
VulDB Temp Score: 9.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.8
CNA Vector (MITRE): 🔒

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

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
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: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: IQ Engine 10.6r1a/10.6r5

Timelineinfo

10/20/2023 CVE reserved
09/14/2026 +1060 days Advisory disclosed
09/14/2026 +0 days VulDB entry created
09/14/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: extremenetworks.com
Status: Confirmed

CVE: CVE-2023-46273 (🔒)
GCVE (CVE): GCVE-0-2023-46273
GCVE (VulDB): GCVE-100-403417
EUVD: 🔒

Entryinfo

Created: 09/14/2026 08:15
Updated: 09/14/2026 09:34
Changes: 09/14/2026 08:15 (64), 09/14/2026 09:34 (1)
Complete: 🔍
Cache ID: 216::103

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