CVE-2022-23989
Description
A flood of connections to Stormshield Network Security's SSLVPN service can saturate the loopback interface, blocking network traffic and causing denial of service.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
A flood of connections to Stormshield Network Security's SSLVPN service can saturate the loopback interface, blocking network traffic and causing denial of service.
Vulnerability
In Stormshield Network Security (SNS) versions before 3.7.25, 3.8.x through 3.11.x before 3.11.13, 4.x before 4.2.10, and 4.3.x before 4.3.5, the SSLVPN service is vulnerable to a loopback interface saturation when receiving a large number of forged and properly timed connections [1]. This affects the firewall's ability to process network traffic.
Exploitation
An attacker with network access can send a flood of specially crafted connections to the SSLVPN service. The traffic must be properly timed to trigger the saturation condition. No authentication is required, and the attack complexity is low [1].
Impact
Successful exploitation leads to saturation of the loopback interface, resulting in blocking of almost all network traffic. This makes the firewall unreachable, causing a denial of service (DoS). The CVSS v3.1 base score is 7.5 (High) with availability impact being High and no impact on confidentiality or integrity [1].
Mitigation
Stormshield has released fixed versions: 3.7.25, 3.11.13, 4.2.10, and 4.3.5 [1]. There is no workaround solution. Users should upgrade to these versions or later.
AI Insight generated on May 27, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
2- Range: <3.7.25, >=3.8.0 <3.11.13, >=4.0.0 <4.2.10, >=4.3.0 <4.3.5
Patches
0No patches discovered yet.
Vulnerability mechanics
No source-code context for this CVE — mechanics is only generated when we can read the actual fix diff. Without that, the four sections (root cause, attack vector, affected code, fix) would be speculation rather than analysis.
References
1- advisories.stormshield.eu/2022-003mitrex_refsource_MISC
News mentions
0No linked articles in our index yet.