CVE-2020-27130

9.1 CRITICAL 66% exploit odds Drop everything Fix listed Disclosure Network gear

What it is

A vulnerability in Cisco Security Manager could allow an unauthenticated, remote attacker to gain access to sensitive information. The vulnerability is due to improper validation of directory traversal character sequences within requests to an affected device. An attacker could exploit this vulnerability by sending a crafted request to the affected device. A successful exploit could allow the attacker to download arbitrary files from the affected device.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of data exposure, data tampering.
Exploit odds: 65.9% chance of exploitation in the next 30 days (EPSS). Higher than most.
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2020-10-13 00:00 UTC ReservedThe CVE id was reserved by its CNA
2020-11-17 04:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 03:08 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 65.9% in the next 30 days (EPSS).
Severity: 9.1 CRITICAL (CVSS).
Fix: a patch or advisory is linked.
It meets the bar for Drop everything: critical, and exploited or very likely to be.

Details

Published: 2020-11-17 04:15 UTC
Last modified: 2026-06-17 03:08 UTC
Exploit probability: 65.9% · EPSS, next 30 days
Weakness: CWE-35
Record status: Modified

Affected

Cisco Security Manager ≤ 4.21

Attack profile CVSS 3.1 · 9.1

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: None

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2020-27130.md and follow it. Check whether this project is affected by CVE-2020-27130. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record