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CVE-2026-107245

Quick assessment

Affected
Versa VOS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Versa 已确认在 VOS（即 Versa FlexVNF）的 IPsec 实现中存在缓冲区溢出漏洞。 缓冲区溢出漏洞描述 当恶意构造的 IKE 认证（IKE Auth）数据包被发送至 VOS 时，会导致 进程崩溃，从而引发拒绝服务（DoS）。攻击者可通过构造恶意 IKE 认证数据包并将其发送至 VOS 设备的广域网（WAN）接口，对 VOS 设备发起拒绝服务攻击。 在 IKE 认证阶段，如果 IKE 安全关联（SA）协商失败，且远程标识（Remote ID）的大小超过用于处理该标识的缓冲区容量，则会导致 VOS

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I. Basic Information for CVE-2026-107245

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Versa has confirmed a buffer overflow vulnerability in the IPsec implementation on VOS, aka Versa FlexVNF.  Buffer Overflow Vulnerability Description When a maliciously crafted IKE Auth packet is sent to VOS, the vsmd process crashes, thereby resulting in a Denial of Service. An attacker can create a Denial-of-Service attack on the VOS appliances by crafting a malicious IKE Auth packet and sending it to the WAN interfaces on the VOS. During the IKE Authentication phase, if the IKE SA negotiation fails, and the size of the Remote ID is larger than the buffer size used to process the Remote ID, it will result in a crash of the vsmd process on the VOS appliance. What is impacted? VOS nodes configured with IPsec VPN profiles of type controller-staging-sdwan or remote-access-server using a WAN interface as the IPsec endpoint are vulnerable. (IPsec profiles configured with an overlay interface as the IPsec endpoint are not affected.) This configuration typically applies to all Controllers, Hub Controllers, and SSE Gateways. Additionally, site-to-site VPN profiles configured without a peer IP address, hostname, or FQDN are also vulnerable. What is not impacted? The VOS nodes listed above are not vulnerable if they are not accessible from the Internet.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Versa VOS 21.1.1 ~ 21.2.3 -

II. Public POCs for CVE-2026-107245

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III. Intelligence Information for CVE-2026-107245

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Other References for CVE-2026-107245 (1)

Same Patch Batch · Versa · 2026-11-10 · 6 CVEs total

CVE-2026-107244 VOS Node.js 服务认证绕过漏洞
CVE-2026-107241 VOS Node.js 服务默认凭据漏洞
CVE-2026-107243 Versa VOS Node.js 服务硬编码密钥漏洞
CVE-2026-107240 Versa VOS 任意版本 Node.js 远程命令执行漏洞
CVE-2026-107242 VOS Node.js 会话劫持漏洞

IV. Related Vulnerabilities

Same product: VOS
Same vendor: Versa
Same weakness: CWE-121