CVE-2024-20343 | Cisco IOS XR Software CLI Arbitrary File Read Vulnerability

A vulnerability in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker to read any file in the file system of the underlying Linux operating system. The attacker must have valid credentials on the affected device. This vulnerability is due to incorrect validation of the arguments that are passed to a specific CLI command. An attacker could exploit this vulnerability by logging in to an affected device with low-privileged credentials and using the affected command. A successful exploit could allow the attacker access files in read-only mode on the Linux file system.

Published: 2024-09-11 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-20343 is rated Low Risk (29.8/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.07%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2024-20343

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-21 0.05% 0.07% +0.02%
2 2025-11-18 0.09% 0.05% -0.04%
3 2025-06-02 — 0.09% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-20343

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.5 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 1.8 3.6 [email protected]
5.5 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 1.8 3.6 [email protected]

Weakness enumeration for CVE-2024-20343

Affected software / configurations for CVE-2024-20343

Vendor Product Version Raw CPE
cisco ios_xr 6.5.1 cpe:2.3:o:cisco:ios_xr:6.5.1:*:*:*:*:*:x64:*
cisco ios_xr 6.5.2 cpe:2.3:o:cisco:ios_xr:6.5.2:*:*:*:*:*:x64:*
cisco ios_xr 6.5.3 cpe:2.3:o:cisco:ios_xr:6.5.3:*:*:*:*:*:x64:*
cisco ios_xr 6.5.15 cpe:2.3:o:cisco:ios_xr:6.5.15:*:*:*:*:*:x64:*
cisco ios_xr 6.5.92 cpe:2.3:o:cisco:ios_xr:6.5.92:*:*:*:*:*:x64:*
cisco ios_xr 6.5.93 cpe:2.3:o:cisco:ios_xr:6.5.93:*:*:*:*:*:x64:*
cisco ios_xr 6.6.1 cpe:2.3:o:cisco:ios_xr:6.6.1:*:*:*:*:*:x64:*
cisco ios_xr 6.6.2 cpe:2.3:o:cisco:ios_xr:6.6.2:*:*:*:*:*:x64:*
cisco ios_xr 6.6.3 cpe:2.3:o:cisco:ios_xr:6.6.3:*:*:*:*:*:x64:*
cisco ios_xr 6.6.4 cpe:2.3:o:cisco:ios_xr:6.6.4:*:*:*:*:*:x64:*
cisco ios_xr 6.6.11 cpe:2.3:o:cisco:ios_xr:6.6.11:*:*:*:*:*:x64:*
cisco ios_xr 6.6.12 cpe:2.3:o:cisco:ios_xr:6.6.12:*:*:*:*:*:x64:*
cisco ios_xr 6.6.25 cpe:2.3:o:cisco:ios_xr:6.6.25:*:*:*:*:*:x64:*
cisco ios_xr 7.0.0 cpe:2.3:o:cisco:ios_xr:7.0.0:*:*:*:*:*:x64:*
cisco ios_xr 7.0.1 cpe:2.3:o:cisco:ios_xr:7.0.1:*:*:*:*:*:x64:*
cisco ios_xr 7.0.2 cpe:2.3:o:cisco:ios_xr:7.0.2:*:*:*:*:*:x64:*
cisco ios_xr 7.0.11 cpe:2.3:o:cisco:ios_xr:7.0.11:*:*:*:*:*:x64:*
cisco ios_xr 7.0.12 cpe:2.3:o:cisco:ios_xr:7.0.12:*:*:*:*:*:x64:*
cisco ios_xr 7.0.14 cpe:2.3:o:cisco:ios_xr:7.0.14:*:*:*:*:*:x64:*
cisco ios_xr 7.0.90 cpe:2.3:o:cisco:ios_xr:7.0.90:*:*:*:*:*:x64:*
cisco ios_xr 7.1.1 cpe:2.3:o:cisco:ios_xr:7.1.1:*:*:*:*:*:x64:*
cisco ios_xr 7.1.2 cpe:2.3:o:cisco:ios_xr:7.1.2:*:*:*:*:*:x64:*
cisco ios_xr 7.1.3 cpe:2.3:o:cisco:ios_xr:7.1.3:*:*:*:*:*:x64:*
cisco ios_xr 7.1.15 cpe:2.3:o:cisco:ios_xr:7.1.15:*:*:*:*:*:x64:*
cisco ios_xr 7.1.25 cpe:2.3:o:cisco:ios_xr:7.1.25:*:*:*:*:*:x64:*
cisco ios_xr 7.2.0 cpe:2.3:o:cisco:ios_xr:7.2.0:*:*:*:*:*:x64:*
cisco ios_xr 7.2.1 cpe:2.3:o:cisco:ios_xr:7.2.1:*:*:*:*:*:x64:*
cisco ios_xr 7.2.2 cpe:2.3:o:cisco:ios_xr:7.2.2:*:*:*:*:*:x64:*
cisco ios_xr 7.2.12 cpe:2.3:o:cisco:ios_xr:7.2.12:*:*:*:*:*:x64:*
cisco ios_xr 7.3.1 cpe:2.3:o:cisco:ios_xr:7.3.1:*:*:*:*:*:x64:*
cisco ios_xr 7.3.2 cpe:2.3:o:cisco:ios_xr:7.3.2:*:*:*:*:*:x64:*
cisco ios_xr 7.3.3 cpe:2.3:o:cisco:ios_xr:7.3.3:*:*:*:*:*:x64:*
cisco ios_xr 7.3.4 cpe:2.3:o:cisco:ios_xr:7.3.4:*:*:*:*:*:x64:*
cisco ios_xr 7.3.5 cpe:2.3:o:cisco:ios_xr:7.3.5:*:*:*:*:*:x64:*
cisco ios_xr 7.3.6 cpe:2.3:o:cisco:ios_xr:7.3.6:*:*:*:*:*:x64:*
cisco ios_xr 7.3.15 cpe:2.3:o:cisco:ios_xr:7.3.15:*:*:*:*:*:x64:*
cisco ios_xr 7.3.16 cpe:2.3:o:cisco:ios_xr:7.3.16:*:*:*:*:*:x64:*
cisco ios_xr 7.3.27 cpe:2.3:o:cisco:ios_xr:7.3.27:*:*:*:*:*:x64:*
cisco ios_xr 7.4.1 cpe:2.3:o:cisco:ios_xr:7.4.1:*:*:*:*:*:x64:*
cisco ios_xr 7.4.2 cpe:2.3:o:cisco:ios_xr:7.4.2:*:*:*:*:*:x64:*
cisco ios_xr 7.4.15 cpe:2.3:o:cisco:ios_xr:7.4.15:*:*:*:*:*:x64:*
cisco ios_xr 7.4.16 cpe:2.3:o:cisco:ios_xr:7.4.16:*:*:*:*:*:x64:*
cisco ios_xr 7.5.1 cpe:2.3:o:cisco:ios_xr:7.5.1:*:*:*:*:*:x64:*
cisco ios_xr 7.5.2 cpe:2.3:o:cisco:ios_xr:7.5.2:*:*:*:*:*:x64:*
cisco ios_xr 7.5.3 cpe:2.3:o:cisco:ios_xr:7.5.3:*:*:*:*:*:x64:*
cisco ios_xr 7.5.4 cpe:2.3:o:cisco:ios_xr:7.5.4:*:*:*:*:*:x64:*
cisco ios_xr 7.5.5 cpe:2.3:o:cisco:ios_xr:7.5.5:*:*:*:*:*:x64:*
cisco ios_xr 7.5.12 cpe:2.3:o:cisco:ios_xr:7.5.12:*:*:*:*:*:x64:*
cisco ios_xr 7.5.52 cpe:2.3:o:cisco:ios_xr:7.5.52:*:*:*:*:*:x64:*
cisco ios_xr 7.6.1 cpe:2.3:o:cisco:ios_xr:7.6.1:*:*:*:*:*:x64:*
cisco ios_xr 7.6.2 cpe:2.3:o:cisco:ios_xr:7.6.2:*:*:*:*:*:x64:*
cisco ios_xr 7.6.15 cpe:2.3:o:cisco:ios_xr:7.6.15:*:*:*:*:*:x64:*
cisco ios_xr 7.7.1 cpe:2.3:o:cisco:ios_xr:7.7.1:*:*:*:*:*:x64:*
cisco ios_xr 7.7.2 cpe:2.3:o:cisco:ios_xr:7.7.2:*:*:*:*:*:x64:*
cisco ios_xr 7.7.21 cpe:2.3:o:cisco:ios_xr:7.7.21:*:*:*:*:*:x64:*
cisco ios_xr 7.8.1 cpe:2.3:o:cisco:ios_xr:7.8.1:*:*:*:*:*:x64:*
cisco ios_xr 7.8.2 cpe:2.3:o:cisco:ios_xr:7.8.2:*:*:*:*:*:x64:*
cisco ios_xr 7.8.12 cpe:2.3:o:cisco:ios_xr:7.8.12:*:*:*:*:*:x64:*
cisco ios_xr 7.8.22 cpe:2.3:o:cisco:ios_xr:7.8.22:*:*:*:*:*:x64:*
cisco ios_xr 7.9.1 cpe:2.3:o:cisco:ios_xr:7.9.1:*:*:*:*:*:x64:*
cisco ios_xr 7.9.2 cpe:2.3:o:cisco:ios_xr:7.9.2:*:*:*:*:*:x64:*
cisco ios_xr 7.9.21 cpe:2.3:o:cisco:ios_xr:7.9.21:*:*:*:*:*:x64:*
cisco ios_xr 7.10.1 cpe:2.3:o:cisco:ios_xr:7.10.1:*:*:*:*:*:x64:*
cisco ios_xr 7.10.2 cpe:2.3:o:cisco:ios_xr:7.10.2:*:*:*:*:*:x64:*
cisco ios_xr 7.11.1 cpe:2.3:o:cisco:ios_xr:7.11.1:*:*:*:*:*:x64:*
cisco ios_xr 24.1.1 cpe:2.3:o:cisco:ios_xr:24.1.1:*:*:*:*:*:x64:*

References for CVE-2024-20343

cvelogic Threat Intelligence