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CVE-2024-40891

**UNSUPPORTED WHEN ASSIGNED** A post-authentication command injection vulnerability in the management commands of the legacy DSL CPE Zyxel VMG4325-B10A firmware version 1.00(AAFR.4)C0_20170615 could allow an authenticated attacker to execute operating system (OS) commands on an a…

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**UNSUPPORTED WHEN ASSIGNED** A post-authentication command injection vulnerability in the management commands of the legacy DSL CPE Zyxel VMG4325-B10A firmware version 1.00(AAFR.4)C0_20170615 could allow an authenticated attacker to execute operating system (OS) commands on an affected device via Telnet.
CVSS 8.8 (HIGH) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.4/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 8.8: +1.32
  • Fresh EPSS: 22.89%: +0.11

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

Sources: 11 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

Flashpoint.io
Press · 31 Dec 2025, 08:00 · Flashpoint Weekly Vulnerability Insights and Prioritization Report - Flashpoint.io
Cybersecurity Dive
Press · 17 Jun 2025, 07:00 · Critical Zyxel vulnerability under active exploitation after long period of quiet - Cybersecurity Dive
TechTarget
Press · 05 Feb 2025, 08:00 · Zyxel won’t patch end-of-life routers against zero-day attacks - TechTarget
Help Net Security
Press · 05 Feb 2025, 08:00 · Swap EOL Zyxel routers, upgrade Netgear ones! - Help Net Security
SecurityWeek
Press · 05 Feb 2025, 08:00 · Zyxel Issues ‘No Patch’ Warning for Exploited Zero-Days - SecurityWeek
See all 11 source documents
TechTarget
Press · 05 Feb 2025, 08:00 · Zyxel won't patch end-of-life routers against zero-day attacks - TechTarget
Cybersecurity Dive
Press · 04 Feb 2025, 08:00 · Exploitation of vulnerability in Zyxel CPE targets legacy routers - Cybersecurity Dive
Help Net Security
Press · 02 Feb 2025, 08:00 · Week in review: Apple 0-day used to target iPhones, DeepSeek’s popularity exploited by scammers - Help Net Security
BleepingComputer
Press · 29 Jan 2025, 08:00 · Hackers exploit critical unpatched flaw in Zyxel CPE devices - BleepingComputer
Cybersecurity Dive
Press · 29 Jan 2025, 08:00 · Attackers exploit zero-day vulnerability in Zyxel CPE devices - Cybersecurity Dive
GreyNoise
Press · 28 Jan 2025, 08:00 · Active Exploitation of Zero-day Zyxel CPE Vulnerability (CVE-2024-40891) - GreyNoise

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 8.4 (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 8.8; EPSS 22.9%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
network access, low 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 13:59:16.850043+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
First press mention
28 Jan 2025, 08:00
Published
04 Feb 2025, 10:02
Added to the CISA KEV catalog
11 Feb 2025, 00:00
Latest press mention
31 Dec 2025, 08:00
Score calculated
05 Nov 2026, 13:59