CVE-2019-1761 json
Cisco IOS and IOS XE Software Hot Standby Router Protocol Information Leak Vulnerability
published 2019-03-28 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-10318
- cvss
- 4.3
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 50%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 23 mo ago
Exploit prediction
0.63% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 4.3 | CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 3.1 | 4.3 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 3.3 | AV:A/AC:L/Au:N/C:P/I:N/A:N |
Affected products
- Cisco Cisco IOS and IOS XE Software
Classification
- Weakness
-
- CWE-665 Improper Initialization
- Technology feeds
References
-
tools.cisco.com
/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190327-ios-infoleak
vendor-advisory, patch
-
securityfocus.com
/bid/107620
vdb-entry, broken-link, third-party-advisory
Sources
- CVE List CVE-2019-1761
- NVD CVE-2019-1761
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