CVE-2026-0257: CWE-565 Reliance on Cookies without Validation and Integrity Checking in Palo Alto Networks Cloud NGFW
Arctic Wolf Labs has been tracking multiple campaigns built around CastleLoader, a multi-stage shellcode loader that has evolved significantly. Three distinct campaigns were identified: Urutyka, Garrigin, and Noidret. The most significant development is the integration of NeedleStealer framework payloads, marking the first observed use of Rust and Golang tooling in this campaign cluster. NeedleStealer includes a Rust-based desktop cryptocurrency wallet spoofer targeting Ledger, Trezor, and Exodus wallets, and a Golang-based malicious browser extension installer. The campaigns utilize obfuscated PowerShell stagers, IronPython runtimes, and NodeJS-based shellcode injectors. Infrastructure analysis revealed consistent naming patterns, staged domains for future operations, and the use of fraudulently obtained code-signing certificates. The campaigns consistently deploy NetSupport RAT and CastleStealer alongside the new NeedleStealer payloads, suggesting an expansion toward high-value cryptocurrency targeting.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-0257) affects Palo Alto Networks Cloud NGFW and is categorized under CWE-565, indicating reliance on cookies without proper validation and integrity checking. The CVSS 4.0 vector indicates network attack vector, low attack complexity, no privileges or user interaction required, but with high scope and impact on confidentiality, integrity, and availability. The vulnerability could allow attackers to hijack sessions or manipulate authentication cookies. The description references related threat actor campaigns involving malware such as CastleLoader and NeedleStealer that target cryptocurrency wallets and use advanced techniques including obfuscated PowerShell, IronPython runtimes, and code-signing certificates. However, the vulnerability details and exploitation specifics are limited, and no patch or remediation level has been provided by the vendor.
Potential Impact
Successful exploitation could lead to session hijacking or unauthorized access due to improper cookie validation, potentially compromising confidentiality, integrity, and availability of the affected system. The CVSS score of 7.8 reflects a high impact. The association with sophisticated malware campaigns targeting cryptocurrency wallets suggests a risk of financial theft or data compromise if exploited. However, no known exploits are currently reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary mitigation has been published by Palo Alto Networks. Organizations should monitor vendor communications for updates and apply patches promptly once available. Until then, consider additional monitoring of session management and cookie handling as a precaution.
Indicators of Compromise
- domain: teamsvoicepremium.com
- domain: italianhitech.com
- ip: 94.26.90.112
- domain: ebedidance.com
- domain: drrajivparti.com
- cve: CVE-2026-0257
- hash: d26ea6828cc01ae151d99bbee78c4e6d132e9077842a558bce3901fa0970d9be
- domain: p-rala.com
- cve: CVE-2026-48558
- hash: 2fcf553b9656523b3207c08cdf16f7be9a25e55cf8c29f5caf933151c9214367
- domain: avivtech.org
- domain: claudettes.net
- domain: skipraid.com
- hash: 1390903f57b21f346193aefbbfd36759
- hash: 4d5f81bf79554aa7a2187e6ffbc9702a
- hash: 6728b11f74fd435f926ed25c5f2952bb
- hash: 0c48fd6a18ad9c701b254bbdd412efbf7dfdd2be6534a61c14bce719d259df9f
- hash: edff43ecdf7aa476331d925db04e68a2251920165a2109be9df91a56d86b87c7
- hash: fa67487da701ce1d61ee3abb84869f669a6c2aa50ca0148a3c4a87e667716638
- ip: 179.132.128.189
- ip: 216.107.139.188
- ip: 91.92.33.167
- url: http://94.26.90.112/dl-callback/6dkcdpd7-4jacbuf9-prutgux4-2ybssc8v/traffic1.exe/1390903f57b21f346193aefbbfd36759
- url: http://eazysitebuilder.com:4889
- url: http://goodbytetelegramm.com/xxx/main
- url: http://socom-game.com:5500
- url: http://urutyka.com/xxx/viewer32
- domain: claudenell.net
- domain: eazysitebuilder.com
- domain: fangorinaf.com
- domain: garrigin.com
- domain: goodbytetelegramm.com
- domain: grenagana.com
- domain: grorriner.com
- domain: hobtech.net
- domain: kaneta.cc
- domain: monblare.com
- domain: noidret.com
- domain: quiantar.com
- domain: qxvnrta.com
- domain: socom-game.com
- domain: strainted.com
- domain: thenugcompany.org
- domain: urutyka.com
- cve: CVE-2026-6875
- domain: idp.kualabemo.com
- cve: CVE-2026-18577
- cve: CVE-2026-18556
- domain: idp.keyreniao.com
- domain: idp.korminel.com
- domain: msauth.monlinelogicaline.com
- domain: mslogin.milocaroline.com
- domain: msonline.logicalineonline.com
- domain: office.ofrecie.com
CVE-2026-0257: CWE-565 Reliance on Cookies without Validation and Integrity Checking in Palo Alto Networks Cloud NGFW
Description
Arctic Wolf Labs has been tracking multiple campaigns built around CastleLoader, a multi-stage shellcode loader that has evolved significantly. Three distinct campaigns were identified: Urutyka, Garrigin, and Noidret. The most significant development is the integration of NeedleStealer framework payloads, marking the first observed use of Rust and Golang tooling in this campaign cluster. NeedleStealer includes a Rust-based desktop cryptocurrency wallet spoofer targeting Ledger, Trezor, and Exodus wallets, and a Golang-based malicious browser extension installer. The campaigns utilize obfuscated PowerShell stagers, IronPython runtimes, and NodeJS-based shellcode injectors. Infrastructure analysis revealed consistent naming patterns, staged domains for future operations, and the use of fraudulently obtained code-signing certificates. The campaigns consistently deploy NetSupport RAT and CastleStealer alongside the new NeedleStealer payloads, suggesting an expansion toward high-value cryptocurrency targeting.
CVSS v4.0
Score 7.8high
Affected software
Palo Alto Networks
Cloud NGFW
Palo Alto Networks
PAN-OS
Palo Alto Networks
Prisma Access
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-0257) affects Palo Alto Networks Cloud NGFW and is categorized under CWE-565, indicating reliance on cookies without proper validation and integrity checking. The CVSS 4.0 vector indicates network attack vector, low attack complexity, no privileges or user interaction required, but with high scope and impact on confidentiality, integrity, and availability. The vulnerability could allow attackers to hijack sessions or manipulate authentication cookies. The description references related threat actor campaigns involving malware such as CastleLoader and NeedleStealer that target cryptocurrency wallets and use advanced techniques including obfuscated PowerShell, IronPython runtimes, and code-signing certificates. However, the vulnerability details and exploitation specifics are limited, and no patch or remediation level has been provided by the vendor.
Potential Impact
Successful exploitation could lead to session hijacking or unauthorized access due to improper cookie validation, potentially compromising confidentiality, integrity, and availability of the affected system. The CVSS score of 7.8 reflects a high impact. The association with sophisticated malware campaigns targeting cryptocurrency wallets suggests a risk of financial theft or data compromise if exploited. However, no known exploits are currently reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary mitigation has been published by Palo Alto Networks. Organizations should monitor vendor communications for updates and apply patches promptly once available. Until then, consider additional monitoring of session management and cookie handling as a precaution.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- palo_alto
- Date Reserved
- 2025-11-03T20:44:17.691Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Indicators of Compromise
Domain
| Value | Description | Copy |
|---|---|---|
domainteamsvoicepremium.com | — | |
domainitalianhitech.com | — | |
domainebedidance.com | — | |
domaindrrajivparti.com | — | |
domainp-rala.com | — | |
domainavivtech.org | — | |
domainclaudettes.net | — | |
domainskipraid.com | — | |
domainclaudenell.net | — | |
domaineazysitebuilder.com | — | |
domainfangorinaf.com | — | |
domaingarrigin.com | — | |
domaingoodbytetelegramm.com | — | |
domaingrenagana.com | — | |
domaingrorriner.com | — | |
domainhobtech.net | — | |
domainkaneta.cc | — | |
domainmonblare.com | — | |
domainnoidret.com | — | |
domainquiantar.com | — | |
domainqxvnrta.com | — | |
domainsocom-game.com | — | |
domainstrainted.com | — | |
domainthenugcompany.org | — | |
domainurutyka.com | — | |
domainidp.kualabemo.com | — | |
domainidp.keyreniao.com | — | |
domainidp.korminel.com | — | |
domainmsauth.monlinelogicaline.com | — | |
domainmslogin.milocaroline.com | — | |
domainmsonline.logicalineonline.com | — | |
domainoffice.ofrecie.com | — |
Ip
| Value | Description | Copy |
|---|---|---|
ip94.26.90.112 | — | |
ip179.132.128.189 | — | |
ip216.107.139.188 | — | |
ip91.92.33.167 | — |
Cve
| Value | Description | Copy |
|---|---|---|
cveCVE-2026-0257 | — | |
cveCVE-2026-48558 | — | |
cveCVE-2026-6875 | — | |
cveCVE-2026-18577 | — | |
cveCVE-2026-18556 | — |
Hash
| Value | Description | Copy |
|---|---|---|
hashd26ea6828cc01ae151d99bbee78c4e6d132e9077842a558bce3901fa0970d9be | — | |
hash2fcf553b9656523b3207c08cdf16f7be9a25e55cf8c29f5caf933151c9214367 | — | |
hash1390903f57b21f346193aefbbfd36759 | — | |
hash4d5f81bf79554aa7a2187e6ffbc9702a | — | |
hash6728b11f74fd435f926ed25c5f2952bb | — | |
hash0c48fd6a18ad9c701b254bbdd412efbf7dfdd2be6534a61c14bce719d259df9f | — | |
hashedff43ecdf7aa476331d925db04e68a2251920165a2109be9df91a56d86b87c7 | — | |
hashfa67487da701ce1d61ee3abb84869f669a6c2aa50ca0148a3c4a87e667716638 | — |
Url
| Value | Description | Copy |
|---|---|---|
urlhttp://94.26.90.112/dl-callback/6dkcdpd7-4jacbuf9-prutgux4-2ybssc8v/traffic1.exe/1390903f57b21f346193aefbbfd36759 | — | |
urlhttp://eazysitebuilder.com:4889 | — | |
urlhttp://goodbytetelegramm.com/xxx/main | — | |
urlhttp://socom-game.com:5500 | — | |
urlhttp://urutyka.com/xxx/viewer32 | — |
Threat ID: 6a04c4b4cbff5d8610fad297
Added to database: 05/13/2026, 18:36:36 UTC
Last enriched: 08/08/2026, 12:41:12 UTC
Last updated: 09/14/2026, 22:01:31 UTC
Views: 286
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