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CVE-2020-3153

A vulnerability in the installer component of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated local attacker to copy user-supplied files to system level directories with system level privileges. The vulnerability is due to the incorrect handling o…

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A vulnerability in the installer component of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated local attacker to copy user-supplied files to system level directories with system level privileges. The vulnerability is due to the incorrect handling of directory paths. An attacker could exploit this vulnerability by creating a malicious file and copying the file to a system directory. An exploit could allow the attacker to copy malicious files to arbitrary locations with system level privileges. This could include DLL pre-loading, DLL hijacking, and other related attacks. To exploit this vulnerability, the attacker needs valid credentials on the Windows system.
CVSS 6.5 (MEDIUM) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.1/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 6.5: +0.97
  • Fresh EPSS: 28.52%: +0.14

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

Sources: 3 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

BleepingComputer
Press · 07 Jun 2023, 07:00 · Cisco fixes AnyConnect bug giving Windows SYSTEM privileges - BleepingComputer
TechTarget
Press · 26 Oct 2022, 07:00 · Cisco, CISA warn 2 AnyConnect flaws are under attack - TechTarget
The Register
Press · 26 Oct 2022, 07:00 · Cisco AnyConnect Windows client under active attack - The Register

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 8.1 (2026-11-02 15:12). The curve appears once the score changes.

Public exploit evidence

2

Public exploit entries / repo candidates

See 2 repos with metrics
RepositoryStarsForksLanguageUpdated
shubham0d/CVE-2020-315352C#04 May 2020, 19:34
raspberry-pie/CVE-2020-315300C#15 May 2020, 11:42
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 6.5; EPSS 28.5%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
local 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 13:58:17.488851+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
Published
19 Feb 2020, 19:15
Added to the CISA KEV catalog
24 Oct 2022, 00:00
First press mention
26 Oct 2022, 07:00
Latest press mention
07 Jun 2023, 07:00
Score calculated
05 Nov 2026, 13:58
PoCs on GitHub
2 repositories