CVE-2024-20431 [Medium] | Security Bypass in Firepower Threat Defense

A vulnerability in the geolocation access control feature of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass an access control policy. This vulnerability is due to improper assignment of geolocation data. An attacker could exploit this vulnerability by sending traffic through an affected device. A successful exploit could allow the attacker to bypass a geolocation-based access control policy and successfully send traffic to a protected device.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.05%	0.39%	+0.33%
2	2025-05-29	0.04%	0.05%	+0.01%
3	2025-04-15	—	0.04%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.05%

0.39%

+0.33%

2025-05-29

0.04%

0.05%

+0.01%

2025-04-15

—

0.04%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
5.8	3.1	MEDIUM	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:C) Breaking this can reach past the original component and bite other resources—bigger blast radius. Confidentiality (C:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:L) Attackers could change some data, but it’s limited—not everything goes. Availability (A:N) Service keeps running; no real outage angle.	3.9	1.4	[email protected]
5.8	3.1	MEDIUM	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:C) Breaking this can reach past the original component and bite other resources—bigger blast radius. Confidentiality (C:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:L) Attackers could change some data, but it’s limited—not everything goes. Availability (A:N) Service keeps running; no real outage angle.	3.9	1.4	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

5.8

3.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N Click to expand

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C): Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:L): Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N): Service keeps running; no real outage angle.

3.9

1.4

[email protected]

5.8

3.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N Click to expand

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C): Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:L): Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N): Service keeps running; no real outage angle.

3.9

1.4

[email protected]

Affected software / configurations for CVE-2024-20431

Vendor	Product	Version	Raw CPE
cisco	firepower_threat_defense	7.0.0	cpe:2.3:a:cisco:firepower_threat_defense:7.0.0:::::::*
cisco	firepower_threat_defense	7.0.0.1	cpe:2.3:a:cisco:firepower_threat_defense:7.0.0.1:::::::*
cisco	firepower_threat_defense	7.0.1	cpe:2.3:a:cisco:firepower_threat_defense:7.0.1:::::::*
cisco	firepower_threat_defense	7.0.1.1	cpe:2.3:a:cisco:firepower_threat_defense:7.0.1.1:::::::*
cisco	firepower_threat_defense	7.0.2	cpe:2.3:a:cisco:firepower_threat_defense:7.0.2:::::::*
cisco	firepower_threat_defense	7.0.2.1	cpe:2.3:a:cisco:firepower_threat_defense:7.0.2.1:::::::*
cisco	firepower_threat_defense	7.0.3	cpe:2.3:a:cisco:firepower_threat_defense:7.0.3:::::::*
cisco	firepower_threat_defense	7.0.4	cpe:2.3:a:cisco:firepower_threat_defense:7.0.4:::::::*
cisco	firepower_threat_defense	7.0.5	cpe:2.3:a:cisco:firepower_threat_defense:7.0.5:::::::*
cisco	firepower_threat_defense	7.0.6	cpe:2.3:a:cisco:firepower_threat_defense:7.0.6:::::::*
cisco	firepower_threat_defense	7.0.6.1	cpe:2.3:a:cisco:firepower_threat_defense:7.0.6.1:::::::*
cisco	firepower_threat_defense	7.1.0	cpe:2.3:a:cisco:firepower_threat_defense:7.1.0:::::::*
cisco	firepower_threat_defense	7.1.0.1	cpe:2.3:a:cisco:firepower_threat_defense:7.1.0.1:::::::*
cisco	firepower_threat_defense	7.1.0.2	cpe:2.3:a:cisco:firepower_threat_defense:7.1.0.2:::::::*
cisco	firepower_threat_defense	7.1.0.3	cpe:2.3:a:cisco:firepower_threat_defense:7.1.0.3:::::::*
cisco	firepower_threat_defense	7.2.0	cpe:2.3:a:cisco:firepower_threat_defense:7.2.0:::::::*
cisco	firepower_threat_defense	7.2.0.1	cpe:2.3:a:cisco:firepower_threat_defense:7.2.0.1:::::::*
cisco	firepower_threat_defense	7.2.1	cpe:2.3:a:cisco:firepower_threat_defense:7.2.1:::::::*
cisco	firepower_threat_defense	7.2.2	cpe:2.3:a:cisco:firepower_threat_defense:7.2.2:::::::*
cisco	firepower_threat_defense	7.2.3	cpe:2.3:a:cisco:firepower_threat_defense:7.2.3:::::::*
cisco	firepower_threat_defense	7.2.4	cpe:2.3:a:cisco:firepower_threat_defense:7.2.4:::::::*
cisco	firepower_threat_defense	7.2.4.1	cpe:2.3:a:cisco:firepower_threat_defense:7.2.4.1:::::::*
cisco	firepower_threat_defense	7.2.5	cpe:2.3:a:cisco:firepower_threat_defense:7.2.5:::::::*
cisco	firepower_threat_defense	7.2.5.1	cpe:2.3:a:cisco:firepower_threat_defense:7.2.5.1:::::::*
cisco	firepower_threat_defense	7.2.5.2	cpe:2.3:a:cisco:firepower_threat_defense:7.2.5.2:::::::*
cisco	firepower_threat_defense	7.3.0	cpe:2.3:a:cisco:firepower_threat_defense:7.3.0:::::::*
cisco	firepower_threat_defense	7.3.1	cpe:2.3:a:cisco:firepower_threat_defense:7.3.1:::::::*
cisco	firepower_threat_defense	7.3.1.1	cpe:2.3:a:cisco:firepower_threat_defense:7.3.1.1:::::::*
cisco	firepower_threat_defense	7.3.1.2	cpe:2.3:a:cisco:firepower_threat_defense:7.3.1.2:::::::*
cisco	firepower_threat_defense	7.4.0	cpe:2.3:a:cisco:firepower_threat_defense:7.4.0:::::::*
cisco	firepower_threat_defense	7.4.1	cpe:2.3:a:cisco:firepower_threat_defense:7.4.1:::::::*
cisco	firepower_threat_defense	7.4.1.1	cpe:2.3:a:cisco:firepower_threat_defense:7.4.1.1:::::::*

References for CVE-2024-20431

URL	Tags
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-geoip-bypass-MB4zRDu	Vendor Advisory

URL

CVE-2024-20431

Exploit prediction scoring system (EPSS) score for CVE-2024-20431

Common vulnerability scoring system (CVSS) metrics for CVE-2024-20431

Weakness enumeration for CVE-2024-20431

Affected software / configurations for CVE-2024-20431

References for CVE-2024-20431