Is CVE-2019-1858 in the CISA KEV catalog?

No. CVE-2019-1858 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-1858?

CVE-2019-1858 has a CVSS v3 base score of 8.6 (HIGH).

What is the EPSS score for CVE-2019-1858?

CVE-2019-1858 has an EPSS score of 2.62% (84th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-1858?

Upgrade firepower extensible operating system to 2.6.1.131 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2019-1858

HIGHEPSS 84th pctl

8.6

CVSS v3

NVD

Description

A vulnerability in the Simple Network Management Protocol (SNMP) input packet processor of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause the SNMP application to leak system memory, which could cause an affected device to restart unexpectedly. The vulnerability is due to improper error handling when processing inbound SNMP packets. An attacker could exploit this vulnerability by sending multiple crafted SNMP packets to an affected device. A successful exploit could allow the attacker to cause the SNMP application to leak system memory because of an improperly handled error condition during packet processing. Over time, this memory leak could cause the SNMP application to restart multiple times, leading to a system-level restart and a denial of service (DoS) condition.

CWE-20Improper Input Validation CWE-755

How to fix

Remediation Available

firepower extensible operating systemNVD

Affected:>= 2.6, < 2.6.1.131Fixed in:2.6.1.131CVE-2019-1858derived from NVD

fx-osNVD

Affected:>= 2.4, < 2.4.1.222Fixed in:2.4.1.222CVE-2019-1858derived from NVD

nx-osNVD

Affected:< 5.2(1)sv3(4.1a)Fixed in:5.2(1)sv3(4.1a)CVE-2019-1858derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeChanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Exploit Intelligence

2.62%probability of exploitation in 30 days

84thpercentile

Elevated risk: more likely to be exploited than 84% of all known CVEs.

References

Vendor Advisory1

tools.cisco.com

Third-Party Advisory1

securityfocus.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.