Page generated: 09 Nov 2026, 13:17 UTC
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CVE-2024-3393

A Denial of Service vulnerability in the DNS Security feature of Palo Alto Networks PAN-OS software allows an unauthenticated attacker to send a malicious packet through the data plane of the firewall that reboots the firewall. Repeated attempts to trigger this condition will cau…

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A Denial of Service vulnerability in the DNS Security feature of Palo Alto Networks PAN-OS software allows an unauthenticated attacker to send a malicious packet through the data plane of the firewall that reboots the firewall. Repeated attempts to trigger this condition will cause the firewall to enter maintenance mode.
CVSS 8.7 (HIGH) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.5/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 8.7: +1.30
  • Fresh EPSS: 29.12%: +0.15

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

Sources: 8 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

Geopolitechs
Press · 06 Aug 2026, 07:00 · Caught in the Crossfire: Palo Alto Networks Under China's Cybersecurity Review - Geopolitechs
BleepingComputer
Press · 15 Jan 2026, 08:00 · Palo Alto Networks warns of DoS bug letting hackers disable firewalls - BleepingComputer
heise online
Press · 02 Jan 2025, 08:00 · Attackers can send Palo Alto firewalls into maintenance mode - heise online
Check Point Research
Press · 30 Dec 2024, 08:00 · 30th December – Threat Intelligence Report - Check Point Research
SecurityWeek
Press · 30 Dec 2024, 08:00 · Palo Alto Networks Patches Firewall Zero-Day Exploited for DoS Attacks - SecurityWeek
See all 8 source documents
SC Media
Press · 27 Dec 2024, 08:00 · Palo Alto Networks patches DoS bug in PAN-OS software - SC Media
BleepingComputer
Press · 27 Dec 2024, 08:00 · Hackers exploit DoS flaw to disable Palo Alto Networks firewalls - BleepingComputer
The Hacker News
Press · 27 Dec 2024, 08:00 · Palo Alto Releases Patch for PAN-OS DoS Flaw — Update Immediately - The Hacker News

Score evolution

● Hype   ● Reality

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

First record: hype 0.0 · reality 8.5 (2026-11-02 15:13). The curve appears once the score changes.

Public exploit evidence

0

Public exploit entries / repo candidates

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 8.7; EPSS 29.1%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 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 13:59:13.649296+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
First press mention
27 Dec 2024, 08:00
Published
27 Dec 2024, 09:44
Added to the CISA KEV catalog
30 Dec 2024, 00:00
Latest press mention
06 Aug 2026, 07:00
Score calculated
05 Nov 2026, 13:59