CVE-2018-0253

A vulnerability in the ACS Report component of Cisco Secure Access Control System (ACS) could allow an unauthenticated, remote attacker to execute arbitrary commands on an affected system. Commands executed by the attacker are processed at the targeted user's privilege level. The vulnerability is due to insufficient validation of the Action Message Format (AMF) protocol. An attacker could exploit this vulnerability by sending a crafted AMF message that contains malicious code to a targeted user. A successful exploit could allow the attacker to execute arbitrary commands on the ACS device. This vulnerability affects all releases of Cisco Secure ACS prior to Release 5.8 Patch 7. Cisco Bug IDs: CSCve69037.

Published: 2018-05-02 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-0253 is rated High Risk (69.7/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 4.29%). High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2018-0253

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-21 4.71% 4.29% -0.42%
2 2025-11-18 4.29% 4.71% +0.42%
3 2025-11-16 — 4.29% —

Full EPSS history (18 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-0253

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.0 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H 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:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2018-0253

Affected software / configurations for CVE-2018-0253

Vendor Product Version Raw CPE
cisco secure_access_control_system < 5.8 cpe:2.3:a:cisco:secure_access_control_system:*:*:*:*:*:*:*:*
cisco secure_access_control_system 5.8 cpe:2.3:a:cisco:secure_access_control_system:5.8:*:*:*:*:*:*:*
cisco secure_access_control_system 5.8 cpe:2.3:a:cisco:secure_access_control_system:5.8:p1:*:*:*:*:*:*
cisco secure_access_control_system 5.8 cpe:2.3:a:cisco:secure_access_control_system:5.8:p2:*:*:*:*:*:*
cisco secure_access_control_system 5.8 cpe:2.3:a:cisco:secure_access_control_system:5.8:p3:*:*:*:*:*:*
cisco secure_access_control_system 5.8 cpe:2.3:a:cisco:secure_access_control_system:5.8:p4:*:*:*:*:*:*
cisco secure_access_control_system 5.8 cpe:2.3:a:cisco:secure_access_control_system:5.8:p6:*:*:*:*:*:*
cisco secure_access_control_system 5.8\(0.8\) cpe:2.3:a:cisco:secure_access_control_system:5.8\(0.8\):*:*:*:*:*:*:*

References for CVE-2018-0253

cvelogic Threat Intelligence