Cyber Resilience

CVE-2021-1236

Medium

Published: 13 January 2021

Published
13 January 2021
Modified
26 November 2024
KEV Added
Patch
CVSS Score v3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS Score 0.0027 50.9th percentile
Risk Priority 11 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-1236 is a medium-severity Always-Incorrect Control Flow Implementation (CWE-670) vulnerability in Cisco Secure Firewall Management Center. Its CVSS base score is 5.3 (Medium).

Operationally, ranked in the top 49.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Multiple Cisco products are affected by a vulnerability in the Snort application detection engine that could allow an unauthenticated, remote attacker to bypass the configured policies on an affected system. The vulnerability is due to a flaw in the detection…

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algorithm. An attacker could exploit this vulnerability by sending crafted packets that would flow through an affected system. A successful exploit could allow the attacker to bypass the configured policies and deliver a malicious payload to the protected network.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

cisco
ios xe
≤ 17.4.1
cisco
firepower threat defense
≤ 6.5.0.5
cisco
secure firewall management center
2.9.14.0, 2.9.14.14, 2.9.15, 2.9.16, 2.9.17
snort
snort
≤ 2.9.14

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References