CVE-2019-1731

lowpriority · track · 18EPSS 0.004 · 29 %ileEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.36% (29th) EPSS
CVSS 2.1 · low
Is it mine?
115 products
Check your exposure
Who says so?
4 sources
cnnvd · enisa_euvd · fstec_bdu · cisco_csaf

EPSS · scored 2026-10-27

A vulnerability in the SSH CLI key management functionality of Cisco NX-OS Software could allow an authenticated, local attacker to expose a user's private SSH key to all authenticated users on the targeted device. The attacker must authenticate with valid administrator device credentials. The vulnerability is due to incomplete error handling if a specific error type occurs during the SSH key export. An attacker could exploit this vulnerability by authenticating to the device and entering a crafted command at the CLI. A successful exploit could allow the attacker to expose a user's private SSH key. In addition, a similar type of error in the SSH key import could cause the passphrase-protected private SSH key to be imported unintentionally.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

02

cvss

Technical severity, 0–10. One row per scoring source.

5.1
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 2.1–5.1

v2.02.1lowAV:L/AC:L/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 2.9
v3.14.4mediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 0.8 · impact 3.6
v3.05.1mediumCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:Nsecondary · ENISA EU
v3.05.1mediumCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:Nsecondary · psirt@cisco.com USexploitability 0.8 · impact 4.2
v3.05.1mediumCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:Nsecondary · Cisco PSIRT US
v3.15.1mediumAV:L/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:Nsecondary · FSTEC (BDU) RU
v3.14.1mediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)
03

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-755USprimaryCWE-20USCWE-200US
05

affected products (115)

Products and version ranges known to be affected.

showing 20 of 115
06

advisories (1)

Vendor and ecosystem advisories describing this.

  • cisco-sa-20190515-nxos-ssh-infoCisco NX-OS Software SSH Key Information Disclosure Vulnerability2019-05-15csaf · cisco_csafUS

    A vulnerability in the SSH CLI key management functionality of Cisco NX-OS Software could allow an authenticated, local attacker to expose a user's private SSH key to all authenticated users on the targeted device. The attacker must authenticate with valid administrator device credentials. The vulnerability is due to incomplete error handling if a specific error type occurs during the SSH key export. An attacker could exploit this vulnerability by authenticating to the device and entering a crafted command at the CLI. A successful exploit could allow the attacker to expose a user's private SSH key. In addition, a similar type of error in the SSH key import could cause the passphrase-protected private SSH key to be imported unintentionally. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

07

also known as (4)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducisco_csafNVDCVE.orgMITRE
published 2019-05-15modified 2026-06-17
10

references (31)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan