CVE-2022-26500

Exp

Improper limitation of path names in Veeam Backup & Replication 9.5U3, 9.5U4,10.x, and 11.x allows remote authenticated users access to internal API functions that allows attackers to upload and execute arbitrary code.

Published: 2022-03-17 Last update: 2025-11-03 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-26500 is rated Critical Active Threat (88.7/100): CVSS High severity, with high exploitation likelihood (EPSS 19.03%, 95th percentile). CISA KEV confirms active exploitation (added 2022-12-13) affecting Veeam / Backup & Replication. a weakness (CWE-22) Unauthenticated remote administrative access may be possible. The CISA remediation deadline has passed—treat as an emergency patch priority.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

CISA KEV Record for CVE-2022-26500

Name: Veeam Backup & Replication Remote Code Execution Vulnerability · CISA KEV detail

Exploit added: 2022-12-13

Action due: 2023-01-03

Required action: Apply updates per vendor instructions.

Exploit prediction scoring system (EPSS) score for CVE-2022-26500

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-21 23.86% 19.03% -4.83%
2 2026-02-19 20.12% 23.86% +3.74%
3 2025-12-29 — 20.12% —

Full EPSS history (31 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-26500

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 134c704f-9b21-4f2e-91b3-4a467353bcc0
6.5 2.0 MEDIUM
AV:N/AC:L/Au:S/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 6.4 [email protected]

Weakness enumeration for CVE-2022-26500

Affected software / configurations for CVE-2022-26500

Vendor Product Version Raw CPE
veeam veeam_backup_\&_replication >= 10.0.0.4442, < 10.0.1.4854 cpe:2.3:a:veeam:veeam_backup_\&_replication:*:*:*:*:*:*:*:*
veeam veeam_backup_\&_replication >= 11.0.0.825, < 11.0.1.1261 cpe:2.3:a:veeam:veeam_backup_\&_replication:*:*:*:*:*:*:*:*
veeam veeam_backup_\&_replication 9.5.0.1536 cpe:2.3:a:veeam:veeam_backup_\&_replication:9.5.0.1536:*:*:*:*:*:*:*
veeam veeam_backup_\&_replication 9.5.4.2615 cpe:2.3:a:veeam:veeam_backup_\&_replication:9.5.4.2615:*:*:*:*:*:*:*
veeam veeam_backup_\&_replication 10.0.1.4854 cpe:2.3:a:veeam:veeam_backup_\&_replication:10.0.1.4854:-:*:*:*:*:*:*
veeam veeam_backup_\&_replication 10.0.1.4854 cpe:2.3:a:veeam:veeam_backup_\&_replication:10.0.1.4854:p20201202:*:*:*:*:*:*
veeam veeam_backup_\&_replication 10.0.1.4854 cpe:2.3:a:veeam:veeam_backup_\&_replication:10.0.1.4854:p20210609:*:*:*:*:*:*
veeam veeam_backup_\&_replication 11.0.1.1261 cpe:2.3:a:veeam:veeam_backup_\&_replication:11.0.1.1261:-:*:*:*:*:*:*
veeam veeam_backup_\&_replication 11.0.1.1261 cpe:2.3:a:veeam:veeam_backup_\&_replication:11.0.1.1261:p20211123:*:*:*:*:*:*
veeam veeam_backup_\&_replication 11.0.1.1261 cpe:2.3:a:veeam:veeam_backup_\&_replication:11.0.1.1261:p20211211:*:*:*:*:*:*

References for CVE-2022-26500

cvelogic Threat Intelligence