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CVE-2023-28128· NVD / CVE Program· CNA hackerone

An unrestricted upload of file with dangerous type vulnerability exists in Avalanche versions 6.3.x and below that could allow an attacker t

An unrestricted upload of file with dangerous type vulnerability exists in Avalanche versions 6.3.x and below that could allow an attacker to achieve a remove code execution.

HighCVSS 7.2 · v3.1—Weaponized No fix recorded
Published
May 9, 2023
Updated
Jun 17, 2026
EPSS
84.7% · 100th percentile
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Report tools

JSON

Action score

53

Plan

Add it to your regular patch cycle.

CVSS
28 / 40 · 7.2 / 10
CISA KEV
0 / 30 · Not listed
EPSS
25 / 30 · 84.7%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

Affected systems

VendorProduct
ivantiavalanche

Affected versions

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

  • ivanti avalancheup to 6.3.4.153 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (hackerone). Independent of NVD's CPE analysis and usually ahead of it.

  • n/a Avalanche

    • Avalanche version 6.3.x and belowaffected

Same product

ivanti: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-32560An attacker can send a specially crafted message to the Wavelink Avalanche Manager, which could result in service disruption or arbitrary co
    69This week
  • CVE-2023-46264An unrestricted upload of file with dangerous type vulnerability exists in Avalanche versions 6.4.1 and below that could allow an attacker t
    66This week
  • CVE-2023-32563An unauthenticated attacker could achieve the code execution through a RemoteControl server.
    66This week
  • CVE-2023-46263An unrestricted upload of file with dangerous type vulnerability exists in Avalanche versions 6.4.1 and below that could allow an attacker t
    64This week
  • CVE-2022-36981This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ivanti Avalanche 6.3.3.101.
    64This week
  • CVE-2022-36974This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ivanti Avalanche 6.3.2.3490.
    64This week

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.

Evidence

  • Metasploit module ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Metasploit moduleexploit/windows/http/ivanti_avalanche_filestoreconfig_uploadIvanti Avalanche FileStoreConfig File Uploadexploit2023-04-24

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.

  1. Metasploit-16 d
  2. Published
  3. TodaySep 30, 2026+1240 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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-2022-3698041 days apartThis vulnerability allows remote attackers to bypass authentication on affected installations of Ivanti Avalanche 6.3.2.3490.
    57Plan
  • CVE-2022-4457460 days apartAn improper authentication vulnerability exists in Avalanche version 6.3.x and below allows unauthenticated attacker to modify properties on
    49Plan
  • CVE-2023-281260 days apartAn authentication bypass vulnerability exists in Avalanche versions 6.3.x and below that could allow an attacker to gain access by exploitin
    43Plan
  • CVE-2022-3697941 days apartThis vulnerability allows remote attackers to bypass authentication on affected installations of Ivanti Avalanche 6.3.2.3490.
    41Plan

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • Administrator privileges are required.
  • 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
High
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-434 · Unrestricted Upload of File with Dangerous Type

CVSS vector

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

nvd-primary

Attack context

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

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

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

References

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

All records