NVD / CVE Program· CNA mitre

CVE-2022-26500: Improper limitation of path names in Veeam Backup & Replication 9.5U3, 9.5U4,10.x, and 11.x allows remote authenticated users access to…

Noroxi assessment

Priority: This week (action score 67/100)

CISA has confirmed exploitation in the wild (Dec 13, 2022); it is known to be used in ransomware campaigns. Remediation deadline for US federal agencies: Jan 3, 2023.
Probability of exploitation in the next 30 days: 5.8% (FIRST EPSS); higher than 93.2% of all records.
Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
According to the record, no fixed version is available yet.

Don’t wait for the next maintenance window. Until a fix is released, restrict access to the affected component and follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · CISA KEV · FIRST EPSS

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.

HighCVSS 8.8 · v3.1KEVWeaponized No fix recorded

BDU:2022-01267

Published: Mar 17, 2022
Updated: Jun 17, 2026
EPSS: 5.8% · 93th percentile
CWE: CWE-22

Report tools

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Action score

This week

Don’t wait for the next maintenance window.

CVSS: 35 / 40 · 8.8 / 10
CISA KEV: 30 / 30 · Listed
EPSS: 2 / 30 · 5.8%

CISA SSVC decision

Exploitation: active
Automatable: no
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

Actively exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on Dec 13, 2022. That signals real attacks, not theory.

Remediation deadline for US federal agencies: Jan 3, 2023.

Known to be used in ransomware campaigns.

Get told when this record changes

In CISA KEV: exploitation in the wild confirmed
Weaponized exploit exists
No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
veeam	veeam backup \& replication	cpe:2.3:a:veeam:veeam_backup_\&_replication

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

veeam veeam backup & replication10.0.0.4442 and later · before 10.0.1.4854
veeam veeam backup & replication11.0.0.825 and later · before 11.0.1.1261
veeam veeam backup & replication10.0.1.4854
veeam veeam backup & replication11.0.1.1261
veeam veeam backup & replication9.5.0.1536
veeam veeam backup & replication9.5.4.2615

Same product

veeam: all records

Other highest-scoring records for the same primary product.

CVE-2024-40711A deserialization of untrusted data vulnerability with a malicious payload can allow an unauthenticated remote code execution (RCE).KEV
96Now
CVE-2023-27532Vulnerability in Veeam Backup & Replication component allows encrypted credentials stored in the configuration database to be obtained.KEV
84Now
CVE-2022-26501Veeam Backup & Replication 10.x and 11.x has Incorrect Access Control (issue 1 of 2).KEV
70This week

Published before and after this one in the same product

← EarlierCVE-2015-5742Oct 16, 2015 · VeeamVixProxy in Veeam Backup & Replication (B&R) before 8.0 update 3 stores local administrator credentials in log files with…
8Monitor
← EarlierCVE-2021-35971Jun 30, 2021 · Veeam Backup and Replication 10 before 10.0.1.4854 P20210609 and 11 before 11.0.0.837 P20210507 mishandles deserialization during Microsoft…
39Monitor
Later →CVE-2022-26504Mar 17, 2022 · Improper authentication in Veeam Backup & Replication 9.5U3, 9.5U4,10.x and 11.x component used for Microsoft System Center Virtual Machine…
36Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

PublishedMar 17, 2022
CISA KEVDec 13, 2022+270 d
TodayNov 11, 2026+1699 d

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

—

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

CVE-2022-265010 days apartVeeam Backup & Replication 10.x and 11.x has Incorrect Access Control (issue 1 of 2).KEV
70This week
CVE-2022-265040 days apartImproper authentication in Veeam Backup & Replication 9.5U3, 9.5U4,10.x and 11.x component used for Microsoft System Center Virtual Machine…
36Monitor

Bug bounty scope

VeeamHackerOne · disclosure only (VDP)

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
A low-privileged account is enough.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: high · the service can be disrupted

Attack vector: Network
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Root cause

A user-supplied file name is joined with the allowed directory, but the result is never checked to confirm it is still inside that directory.

The bug in code

The whole CWE-22 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1const file = path.join(ROOT, req.query.name);
2res.sendFile(file);

Fixed

1const file = path.resolve(ROOT, req.query.name);
2if (!file.startsWith(ROOT + path.sep)) {
3  return res.sendStatus(400);
4}
5res.sendFile(file);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

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Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

veeam.com

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records