CVE-2025-0282: Ivanti Connect Secure, Policy Secure, and ZTA Gateways Stack-Based Buffer Overflow Vulnerability

What it is

A stack-based buffer overflow in Ivanti Connect Secure before version 22.7R2.5, Ivanti Policy Secure before version 22.7R1.2, and Ivanti Neurons for ZTA gateways before version 22.7R2.3 allows a remote unauthenticated attacker to achieve remote code execution.

Description quoted from the CVE record (assigned by ivanti, published 2025-01-08).

Weakness: CWE-121: Stack-based Buffer Overflow

How it can be exploited

Exploitable over the network with high attack complexity needing no privileges and no user interaction. Impact: confidentiality high, integrity high, availability high. CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

CISA assessment (SSVC): CISA assesses exploitation as active. Automatable: no. Technical impact: total.

On CISA KEV since

2025-01-08

US federal deadline

2025-01-15

Ransomware use

Yes

Public exploit evidence (Exploit Observer)

Also known as: BDU:2025-00108, BDU:2025-00224, CNNVD-202501-1034, EDB-52213, EUVD-2025-1580, GHSA-rf94-f4r9-6gxh

VEDAS cluster: VEDAS:BARKINGSPARROW

Exploit Observer links 25 pieces of public exploit code or detection modules that name this CVE or one of its aliases.

Exploit code and modules (25)

Code that names this CVE. A repository can be a working exploit, a scanner, a fake or malware; read it before running anything.

• Exploit-DB: https://www.exploit-db.com/raw/52213
• Exploit-DB: https://www.exploit-db.com/raw/52213
• Nuclei template: https://raw.githubusercontent.com/projectdiscovery/nuclei-templates/main/http/cves/2025/CVE-2025-0282.yaml
• Code repository: https://github.com/44xo/cve-2025-0282
• Code repository: https://github.com/AnonStorks/CVE-2025-0282-Full-version/activity?sort=ASC
• Code repository: https://github.com/absholi7ly/cve-2025-0282-ivanti-exploit
• Code repository: https://github.com/adanikamal/cve-2025-0282
• Code repository: https://github.com/almanatra/cve-2025-0282
• Code repository: https://github.com/anonstorks/cve-2025-0282-full-version
• Code repository: https://github.com/anonzoli/cve-2025-0282-full-version
• Code repository: https://github.com/b1ack4sh/blackash-cve-2025-0282
• Code repository: https://github.com/bishopfox/cve-2025-0282-check
• and 13 more

Research and write-ups (10)

• Research or write-up: https://attackerkb.com/topics/WzjO6MNGY3/cve-2025-0282
• Research or write-up: https://bishopfox.com/blog/analysis-and-scanner-for-ivanti-cve-2025-0282
• Research or write-up: https://labs.jamessawyer.co.uk/cves/api/cves?q=CVE-2025-0282
• Research or write-up: https://labs.watchtowr.com/do-secure-by-design-pledges-come-with-stickers-ivanti-connect-secure-rce-cve-2025-0282
• Research or write-up: https://labs.watchtowr.com/exploitation-walkthrough-and-techniques-ivanti-connect-secure-rce-cve-2025-0282
• Research or write-up: https://old.rapid7.com/db/vulnerabilities/pulse-secure-pulse-connect-secure-cve-2025-0282
• Research or write-up: https://pentest-tools.com/blog/exploiting-cve-2025-0282-and-cve-2024-55591
• Research or write-up: https://unit42.paloaltonetworks.com/threat-brief-ivanti-cve-2025-0282-cve-2025-0283
• Research or write-up: https://www.picussecurity.com/resource/resurge-malware-exploits-ivanti-connect-secure-cve-2025-0282-vulnerability
• Research or write-up: https://www.rapid7.com/db/vulnerabilities/pulse-secure-pulse-connect-secure-cve-2025-0282

Vulnerability databases and vendor advisories (13)

Catalogue entries, not exploit evidence.

• Vulnerability database or vendor advisory: https://access.redhat.com/security/cve/cve-2025-0282
• Vulnerability database or vendor advisory: https://cisa.gov/cisa-mitigation-instructions-cve-2025-0282
• Vulnerability database or vendor advisory: https://cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-0282
• Vulnerability database or vendor advisory: https://euvd.enisa.europa.eu/enisa/EUVD-2025-1580
• Vulnerability database or vendor advisory: https://forums.ivanti.com/s/article/Security-Advisory-Ivanti-Connect-Secure-Policy-Secure-ZTA-Gateways-CVE-2025-0282-CVE-2025-0283
• Vulnerability database or vendor advisory: https://forums.ivanti.com/s/article/Security-Advisory-Ivanti-Connect-Secure-Policy-Secure-ZTA-Gateways-CVE-2025-0282-CVE-2025-0283?language=en_US
• Vulnerability database or vendor advisory: https://github.com/advisories/GHSA-rf94-f4r9-6gxh
• Vulnerability database or vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2025-0282
• Vulnerability database or vendor advisory: https://www.cisa.gov/cisa-mitigation-instructions-cve-2025-0282
• Vulnerability database or vendor advisory: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-0282
• Vulnerability database or vendor advisory: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-0282
• Vulnerability database or vendor advisory: https://www.cnnvd.org.cn/home/globalSearch?keyword=CNNVD-202501-1034
• and 1 more

News (2)

• News: https://thehackernews.com/2025/01/ivanti-flaw-cve-2025-0282-actively.html
• News: https://www.helpnetsecurity.com/2025/01/08/ivanti-exploited-connect-secure-zero-day-cve-2025-0282-cve-2025-0283

1181 more references returned by Exploit Observer did not name this CVE or an alias, so they are left out.

VEDAS data as of 2026-11-01T17:12 UTC; fetched 2026-11-02.

Live scores

EPSS

1.000
very likely to be attacked soon

VEDAS

0.983
strong exploit evidence

On CISA KEV

Yes, since 2025-01-08

Detection rule

Nuclei · Suricata

Thin horizontal line: the “likely” (EPSS 0.10) or “strong” (VEDAS 0.90) threshold. Shaded “no data” areas are periods when cve-scores did not publish.

Who is affected

Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.

Exploit Observer also maps it to: ivanti connect_secure, ivanti ivanti_neurons_for_zero_trust_access_(nzta), ivanti neurons_for_zero-trust_access, ivanti policy_secure.

How to fix it

CISA required action: Apply mitigations as set forth in the CISA instructions linked below to include conducting hunt activities, taking remediation actions if applicable, and applying updates prior to returning a device to service.

Vendor guidance:

• https://www.cisa.gov/cisa-mitigation-instructions-CVE-2025-0282
• https://forums.ivanti.com/s/article/Security-Advisory-Ivanti-Connect-Secure-Policy-Secure-ZTA-Gateways-CVE-2025-0282-CVE-2025-0283
• https://nvd.nist.gov/vuln/detail/CVE-2025-0282

How to detect it

Nuclei template (active check)

Ivanti Connect Secure - Stack Buffer Overflow

A stack-based buffer overflow in Ivanti Connect Secure before version 22.7R2.5, Ivanti Policy Secure before version 22.7R1.2, and Ivanti Neurons for ZTA gateways before version 22.7R2.3 allows a remote unauthenticated attacker to achieve remote code execution.

Name and description quoted from the template, written by VEDAS.

The template sends 3 requests (GET /dana-na/auth/url_default/welcome.cgi, GET /dana-na/auth/url_6/welcome.cgi, GET /dana/home/index.cgi); it decides using dsl, regex, word matchers. Severity in the template: critical. Marked as not yet verified against a live vulnerable target.

Run it against a host you own or are authorised to test:

nuclei -u https://your-host -t CVE-2025-0282.yaml

id: CVE-2025-0282

info:
  name: "Ivanti Connect Secure - Stack Buffer Overflow"
  author: vedas-arpsyndicate
  severity: critical
  description: |
    A stack-based buffer overflow in Ivanti Connect Secure before version 22.7R2.5, Ivanti Policy Secure before
    version 22.7R1.2, and Ivanti Neurons for ZTA gateways before version 22.7R2.3 allows a remote unauthenticated
    attacker to achieve remote code execution.
  reference:
    - https://www.exploit.observer/?keyword=CVE-2025-0282&match=exact
    - https://subdomain.center/?engine=ammonites&keyword=ivanti&match=exact
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
    cvss-score: 9.0
    cve-id: CVE-2025-0282
    cwe-id: CWE-121,CWE-787
  metadata:
    verified: false
  tags: cve,cve2025,ivanti,rce,buffer-overflow,passive,kev,vkev,vuln
http:
  - method: GET
    path:
      - "{{BaseURL}}/dana-na/auth/url_default/welcome.cgi"
      - "{{BaseURL}}/dana-na/auth/url_6/welcome.cgi"
      - "{{BaseURL}}/dana/home/index.cgi"

    stop-at-first-match: true
    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "Ivanti"
          - "Connect Secure"
          - "Policy Secure"
          - "Neurons for ZTA"
        condition: or

      - type: dsl
        dsl:
          - "compare_versions(vulnerable_version, '< 22.7R2.5')"

    extractors:
      - type: regex
        name: vulnerable_version
        part: body
        group: 1
        regex:
          - '(?i)(22\.[0-6][Rr][0-9]+(?:\.[0-9]+)?)'  # All 22.0-22.6 versions vulnerable
          - '(?i)(22\.7[Rr][0-1](?:\.[0-1])?)'        # Policy Secure < 22.7R1.2
          - '(?i)(22\.7[Rr]2(?:\.[0-4])?)'            # Connect Secure < 22.7R2.5, ZTA < 22.7R2.3

      - type: kval
        kval:
          - version

CVE-2025-0282.yaml on GitHub

Suricata rules (network detection)

1 rule that alert on traffic matching this exploit: VEDAS CVE-2025-0282 Ivanti Connect Secure - Stack Buffer Overflow. Add them to your Suricata rule set and reload.

alert http $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"VEDAS CVE-2025-0282 Ivanti Connect Secure - Stack Buffer Overflow"; flow:established,to_server; http.uri; content:"/dana-na/auth/url_default/welcome.cgi"; nocase; fast_pattern; classtype:web-application-attack; reference:cve,CVE-2025-0282; reference:url,https://www.exploit.observer/?keyword=CVE-2025-0282&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=ivanti&match=exact; sid:1009024; rev:1;)

CVE-2025-0282.rules on GitHub

Advisories on this CVE

• Ivanti Connect Secure zero-day (CVE-2025-0282) (8 Jan 2025)

References

Exploits and technical analysis

• https://labs.watchtowr.com/exploitation-walkthrough-and-techniques-ivanti-connect-secure-rce-cve-2025-0282/ (third-party-advisory)
• https://github.com/sfewer-r7/CVE-2025-0282 (exploit)

Government sources

• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-0282 (government-resource)
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-0282 (government-resource)

Other references

• https://forums.ivanti.com/s/article/Security-Advisory-Ivanti-Connect-Secure-Policy-Secure-ZTA-Gateways-CVE-2025-0282-CVE-2025-0283
• https://www.cisa.gov/cisa-mitigation-instructions-cve-2025-0282
• https://cloud.google.com/blog/topics/threat-intelligence/ivanti-connect-secure-vpn-zero-day

Other databases

• CVE record (cve.org)
• NVD
• Exploit Observer

Where this comes from

This advisory is generated automatically by VEDAS from: CVE.org record, CISA KEV, cve-scores (EPSS and VEDAS), Exploit Observer, vedas-signatures. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.