Page generated: 09 Nov 2026, 07:06 UTC
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CVE-2026-0257

Authentication bypass vulnerabilities in the GlobalProtect portal and gateway of Palo Alto Networks PAN-OS® software allows the attacker to bypass security restrictions and establish an unauthorized VPN connection. Panorama and Cloud NGFW are not impacted by these issues.

CVSS 7.8 (HIGH) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
3.5/10
REALITY · THREAT PRIORITY
8.6/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 7.8: +1.17
  • Fresh EPSS: 95.64%: +0.48

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 29 documents and public datasets.

Hype components

Headline sample (25%)
30/100
Press, 30 days (60%)
45/100
Grounded branding (15%)
0/100
HYPE TOTAL34/100

Sources and documents

The Hacker News
Press · 23 Oct 2026, 13:50 · Hackers Breach Enterprise Firewalls and VPNs, Exposing Over 70,000 Credentials - The Hacker News
https://tech-insider.org/
Press · 23 Oct 2026, 03:32 · CVE-2026-0257: Qilin Hits Palo Alto VPN Flaw [2026] - https://tech-insider.org/
Help Net Security
Press · 21 Oct 2026, 11:13 · Ransomware gangs have been exploiting Palo Alto GlobalProtect VPN flaw since June - Help Net Security
Group-IB
Press · 21 Oct 2026, 10:00 · Stray Cat, Open Doors: How k0t Wanders Through the Network Edge - Group-IB
Unit 42
Press · 20 Oct 2026, 20:30 · Active Exploitation of May 2026 PAN-OS CVE-2026-0257 (Updated October 20)
See all 29 source documents
Unit 42
Press · 20 Oct 2026, 20:30 · Active Exploitation of May 2026 PAN-OS CVE-2026-0257 (Updated October 20)
Unit 42
Press · 20 Oct 2026, 07:00 · Active Exploitation of May 2026 PAN-OS CVE-2026-0257 (Updated October 20) - Unit 42
The Hacker News
Press · 20 Oct 2026, 07:00 · Qilin and INC Ransomware Groups Exploit Palo Alto Networks Flaw to Bypass MFA - The Hacker News
Infosecurity Magazine
Press · 12 Oct 2026, 07:00 · Months-Old Palo Alto VPN Vulnerability Remains a Target for Ransomware Groups - Infosecurity Magazine
CyberSecurityNews
Press · 11 Oct 2026, 07:00 · Ransomware Actors Exploiting Palo Alto GlobalProtect Flaw for Stealthy VPN Access - CyberSecurityNews
SOC Prime
Press · 23 Jul 2026, 07:00 · CVE-2026-0257 Exploitation Leads to Qilin Ransomware - SOC Prime
CyberSecurityNews
Press · 21 Jul 2026, 07:00 · Hackers Exploiting Palo Alto's PAN-OS Vulnerability to Deploy Qilin Ransomware - CyberSecurityNews
The Hacker News
Press · 21 Jul 2026, 07:00 · Qilin Ransomware Attackers Exploit PAN-OS Authentication Bypass for Initial Access - The Hacker News
Security Affairs
Press · 21 Jul 2026, 07:00 · Qilin Ransomware Affiliates Abuse CVE-2026-0257 to Gain Unauthorized VPN Access - Security Affairs
Arctic Wolf
Press · 20 Jul 2026, 07:00 · Cookie Crumbles: How Exploitation of CVE-2026-0257 Leads to Qilin Ransomware - Arctic Wolf
shattered.io
Press · 21 Jun 2026, 07:00 · Palo Alto GlobalProtect CVE-2026-0257: CVSS 7.8 Auth Bypass Exploited [2026] - shattered.io
Security Affairs
Press · 15 Jun 2026, 07:00 · Palo Alto Warns of Exploitation of VPN Bypass Exploits (CVE-2026-0257) in PAN-OS Flaw - Security Affairs
The Hacker News
Press · 15 Jun 2026, 07:00 · Palo Alto Warns of Active Exploitation of PAN-OS GlobalProtect VPN Flaw - The Hacker News
Arctic Wolf
Press · 11 Jun 2026, 16:02 · Increase in Palo Alto Networks GlobalProtect Authentication Bypass Exploitation via CVE-2026-0257 - Arctic Wolf
Arctic Wolf
Press · 04 Jun 2026, 07:00 · CVE-2026-0257: PAN-OS GlobalProtect Authentication Bypass - Arctic Wolf
Dark Reading
Press · 01 Jun 2026, 07:00 · Patch Now: Another Palo Alto Auth Bypass Bug Under Active Exploit - Dark Reading
CyberScoop
Press · 01 Jun 2026, 07:00 · Attackers are exploiting Palo Alto Networks defect that initially flew under the radar - CyberScoop
Help Net Security
Press · 01 Jun 2026, 07:00 · Hackers are exploiting Palo Alto GlobalProtect VPN authentication bypass (CVE-2026-0257) - Help Net Security
Security Affairs
Press · 31 May 2026, 07:00 · CVE-2026-0257: Rapid7 Caught Attackers Abusing Forged VPN Cookies Against Multiple Customers - Security Affairs
The Hacker News
Press · 30 May 2026, 07:00 · PAN-OS GlobalProtect Authentication Bypass (CVE-2026-0257) Under Active Exploitation - The Hacker News
CyberSecurityNews
Press · 30 May 2026, 07:00 · Palo Alto Networks PAN-OS Authentication Vulnerability Bypass Exploited in the Wild - CyberSecurityNews
BleepingComputer
Press · 30 May 2026, 07:00 · Palo Alto GlobalProtect VPN auth bypass flaw now exploited in attacks - BleepingComputer
Rapid7
Press · 29 May 2026, 07:00 · Rapid7 Observed Exploitation of PAN-OS GlobalProtect Authentication Bypass Vulnerability (CVE-2026-0257) - Rapid7
Unit 42
Press · 06 May 2026, 07:00 · Threat Brief: Exploitation of PAN-OS Captive Portal Zero-Day for Unauthenticated Remote Code Execution - Unit 42

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 3.5 · reality 8.6 (2026-11-02 15:14). The curve appears once the score changes.

Public exploit evidence

1

Public exploit entries / repo candidates

See 1 repos with metrics
RepositoryStarsForksLanguageUpdated
akashsingh0454/CVE-2026-0257-PoC21Python29 May 2026, 20:39
Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 7.8; EPSS 95.6%
Attention, last 30 days
9 distinct story titles; 10 press documents; 2 publisher domains.
Technical potential
network access, no prior privileges, no user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:59:48.680808+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
First press mention
06 May 2026, 07:00
Published
13 May 2026, 18:15
Added to the CISA KEV catalog
29 May 2026, 00:00
Latest press mention
23 Oct 2026, 13:50
Score calculated
05 Nov 2026, 13:59
PoCs on GitHub
1 repositories