CVE-2023-28656 | NGINX Management Suite vulnerability

NGINX Management Suite may allow an authenticated attacker to gain access to configuration objects outside of their assigned environment.   Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Published: 2023-05-03 Last update: 2025-05-19 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-28656 is rated Moderate Risk (49.4/100): CVSS High severity, with low exploitation likelihood (EPSS 0.26%). Review affected assets and schedule 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-2023-28656

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 2026-01-26 0.20% 0.26% +0.05%
2 2025-11-21 0.35% 0.20% -0.15%
3 2025-11-18 — 0.35% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-28656

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.1 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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:L)
A normal user session is enough; they don’t have to be admin.
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:N)
Service keeps running; no real outage angle.
 2.8 5.2 [email protected]
8.1 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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:L)
A normal user session is enough; they don’t have to be admin.
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:N)
Service keeps running; no real outage angle.
 2.8 5.2 [email protected]

Weakness enumeration for CVE-2023-28656

Affected software / configurations for CVE-2023-28656

Vendor Product Version Raw CPE
netapp cloud_backup — cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
netapp ontap_select_deploy — cpe:2.3:a:netapp:ontap_select_deploy:-:*:*:*:*:*:*:*
f5 nginx_api_connectivity_manager >= 1.0.0, < 1.5.0 cpe:2.3:a:f5:nginx_api_connectivity_manager:*:*:*:*:*:*:*:*
f5 nginx_instance_manager >= 2.0.0, < 2.9.0 cpe:2.3:a:f5:nginx_instance_manager:*:*:*:*:*:*:*:*
f5 nginx_security_monitoring >= 1.0.0, < 1.3.0 cpe:2.3:a:f5:nginx_security_monitoring:*:*:*:*:*:*:*:*

References for CVE-2023-28656

cvelogic Threat Intelligence