CVE-2026-34956
| Summary |
A flaw was found in Open vSwitch. When Open vSwitch is configured with a conntrack flow using FTP helpers over the userspace datapath, a remote attacker can send a specially crafted FTP stream with an EPASV command exceeding 255 characters. This heap access error can lead to a crash, resulting in a Denial of Service (DoS) for the affected system.
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| Publication Date |
May 6, 2026, 1:16 a.m. |
| Registration Date |
May 6, 2026, 4:07 a.m. |
| Last Update |
May 6, 2026, 2:17 a.m. |
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CVSS3.1 : MEDIUM
|
| スコア |
5.9
|
| Vector |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 攻撃元区分(AV) |
ネットワーク |
| 攻撃条件の複雑さ(AC) |
高 |
| 攻撃に必要な特権レベル(PR) |
不要 |
| 利用者の関与(UI) |
不要 |
| 影響の想定範囲(S) |
変更なし |
| 機密性への影響(C) |
なし |
| 完全性への影響(I) |
なし |
| 可用性への影響(A) |
高 |
Related information, measures and tools
Common Vulnerabilities List