Veeam 系統 MFA 失效漏洞 CVE-2026-107671 影響管理員許可權
CVE-2026-107671 - Multi-Factor Authentication Bypass via Administrator Privilege Escalation
Veeam 產品因 CVE-2026-107671 漏洞，攻擊者可在擁有管理員帳號時全域關閉 MFA，繞過多因素驗證。
- - 漏洞描述：允許管理員帳號關閉全域 MFA。
- - 受影響產品：Veeam one。
- - 修補建議：立即啟用並強制 MFA，限制管理員停用 MFA。
- - 參考資源： https://www.veeam.com/kb4951
A vulnerability allowing an attacker with valid Administrator credentials to bypass multi-factor authentication by disabling it globally before completing MFA verification.
Impact
Affected Products
The following products are affected by CVE-2026-107671
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
| ID | Vendor | Product | Action |
|---|---|---|---|
| 1 | Veeam | one | |
| 2 | Veeam | one |
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | HIGH | [email protected] |
Disable MFA bypass functionality for administrators and enforce MFA globally.
- Restrict administrator ability to disable MFA.
- Re-enable and enforce MFA globally.
- Audit MFA configuration changes.
- Review administrator access logs.
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-107671.
| URL | Resource |
|---|---|
| https://www.veeam.com/kb4951 |
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-107671 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-107671
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-107671 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-107671 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
十月. 27, 2026
Action Type Old Value New Value Added Description A vulnerability allowing an attacker with valid Administrator credentials to bypass multi-factor authentication by disabling it globally before completing MFA verification. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-288 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/107xxx/CVE-2026-107671.json">CVE-2026-107671</a> Added Reference https://www.veeam.com/kb4951
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.