CVE-2019-1761

lowpriority · track · 17EPSS 0.006 · 50 %ileEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.63% (50th) EPSS
CVSS 3.3 · low
Is it mine?
5,369 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 Hot Standby Router Protocol (HSRP) subsystem of Cisco IOS and IOS XE Software could allow an unauthenticated, adjacent attacker to receive potentially sensitive information from an affected device. The vulnerability is due to insufficient memory initialization. An attacker could exploit this vulnerability by receiving HSRPv2 traffic from an adjacent HSRP member. A successful exploit could allow the attacker to receive potentially sensitive information from the adjacent device.

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.

4.3
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.3–4.3

v2.03.3lowAV:A/AC:L/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 6.5 · impact 2.9
v3.14.3mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 1.4
v3.04.3mediumCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · ENISA EU
v3.04.3mediumCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · psirt@cisco.com USexploitability 2.8 · impact 1.4
v3.04.3mediumCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · Cisco PSIRT US
v3.14.3mediumAV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · FSTEC (BDU) RU
v3.14mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/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-665USprimaryCWE-665US
05

affected products (5,369)

Products and version ranges known to be affected.

showing 20 of 5,369
06

advisories (1)

Vendor and ecosystem advisories describing this.

  • cisco-sa-20190327-ios-infoleakCisco IOS and IOS XE Software Hot Standby Router Protocol Information Leak Vulnerability2019-03-27csaf · cisco_csafUS

    A vulnerability in the Hot Standby Router Protocol (HSRP) subsystem of Cisco IOS and IOS XE Software could allow an unauthenticated, adjacent attacker to receive potentially sensitive information from an affected device. The vulnerability is due to insufficient memory initialization. An attacker could exploit this vulnerability by receiving HSRPv2 traffic from an adjacent HSRP member. A successful exploit could allow the attacker to receive potentially sensitive information from the adjacent device. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190327-ios-infoleak ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190327-ios-infoleak"]

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 2019-03-28modified 2026-06-17
10

references (10)

External citations — patches, advisories, analysis.

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