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CVE-2019-1737

Cisco IOS and IOS XE Software IP Service Level Agreement Denial of Service Vulnerability

High8.6EPSS 2.6%
Published
Updated
Reserved
Assigned by
cisco

Description

A vulnerability in the processing of IP Service Level Agreement (SLA) packets by Cisco IOS Software and Cisco IOS XE software could allow an unauthenticated, remote attacker to cause an interface wedge and an eventual denial of service (DoS) condition on the affected device. The vulnerability is due to improper socket resources handling in the IP SLA responder application code. An attacker could exploit this vulnerability by sending crafted IP SLA packets to an affected device. An exploit could allow the attacker to cause an interface to become wedged, resulting in an eventual denial of service (DoS) condition on the affected device.

Scores

CVSS scores of CVE-2019-1737, by who scored it
Scored byCVSSScoreVector
ciscoCNA (assigner)3.0High8.6CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
NVDNVD · Modified3.1High8.6CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
EPSS (exploitation in 30 days)
2.6% · top 15% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: yes · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.6.

Weakness

Affected products

  • Cisco · Cisco IOS and IOS-XE Software

    • affected 3.7.0S
    • affected 3.7.1S
    • affected 3.7.2S
    • affected 3.7.3S
    • affected 3.7.4S
    • affected 3.7.5S
    • affected 3.7.6S
    • affected 3.7.7S
    • affected 3.7.8S
    • affected 3.7.4aS
    • affected 3.7.2tS
    • affected 3.7.0bS
    • affected 3.7.1aS
    • affected 3.8.0S
    • affected 3.8.1S
    • affected 3.8.2S
    • affected 3.9.1S
    • affected 3.9.0S
    • affected 3.9.2S
    • affected 3.9.1aS
    • affected 3.9.0aS
    • affected 3.2.0SE
    • affected 3.2.1SE
    • affected 3.2.2SE
    • affected 3.2.3SE
    • affected 3.3.0SE
    • affected 3.3.1SE
    • affected 3.3.2SE
    • affected 3.3.3SE
    • affected 3.3.4SE
    • affected 3.3.5SE
    • affected 3.3.0XO
    • affected 3.3.1XO
    • affected 3.3.2XO
    • affected 3.4.0SG
    • affected 3.4.2SG
    • affected 3.4.1SG
    • affected 3.4.3SG
    • affected 3.4.4SG
    • affected 3.4.5SG
    • and 156 more

What to do

Exploitation: The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

References (2)

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

CVE-2019-1737 badge
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Record last updated .