Cyber Resilience

CVE-2020-27130

Cisco Security Manager ≤ 4.21

High EPSS
Published
17 November 2020
Modified
21 November 2024
Patch / advisory
View advisory
CVSS Score v3.1 9.1
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS Score 0.66 99.2th percentile
Risk Priority 91 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2020-27130 is a critical-severity Path Traversal: '.../...//' (CWE-35) vulnerability in Cisco Security Manager. Its CVSS base score is 9.1 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Data from Local System (T1005); ranked in the top 0.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability Data

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…

more

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.

CWE(s)
CWE-35NVD-CWE-Other

Related Threats

MITRE ATT&CK Enterprise Techniques

T1005 Data from Local System Collection
Adversaries may search local system sources, such as file systems, configuration files, local databases, virtual machine files, or process memory, to find files of interest and sensitive data prior to Exfiltration.
attack.mitre.org →
T1083 File and Directory Discovery Discovery
Adversaries may enumerate files and directories or may search in specific locations of a host or network share for certain information within a file system.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2019-12630Same product: Cisco Security Manager
CVE-2020-27131Same product: Cisco Security Manager
CVE-2026-20034Same vendor: Cisco
CVE-2023-20087Same vendor: Cisco
CVE-2023-20077Same vendor: Cisco
CVE-2025-20269Same vendor: Cisco
CVE-2023-20066Same vendor: Cisco
CVE-2023-20098Same vendor: Cisco
CVE-2024-20449Same vendor: Cisco
CVE-2023-20272Same vendor: Cisco

Affected Assets

cisco
security manager
≤ 4.21

Mitigating Controls

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require input validation and path sanitization that neutralize traversal sequences.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development can detect path-traversal flaws before release.

A.8.25 Secure development life cycle partial match
prevents

Secure SDLC mandates input validation and path-handling controls that directly mitigate path traversal.

A.8.26 Application security requirements partial match
prevents

Application security requirements include rules for safe file-path construction and canonicalization.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles require proper directory restrictions and input sanitization to prevent traversal.

A.8.28 Secure coding partial match
prevents

Secure coding standards explicitly forbid unsafe path concatenation and mandate canonicalization routines.

A.8.3 Information access restriction partial match
mitigates

Information access restriction limits file reachability but does not address the input-validation flaw itself.

References