CVE-2022-43515 | X-Forwarded-For header is active by default causes access to Zabbix sites in maintenance mode

Exp

Zabbix Frontend provides a feature that allows admins to maintain the installation and ensure that only certain IP addresses can access it. In this way, any user will not be able to access the Zabbix Frontend while it is being maintained and possible sensitive data will be prevented from being disclosed. An attacker can bypass this protection and access the instance using IP address not listed in the defined range.

Published: 2022-12-05 Last update: 2025-11-03 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-43515 is rated Exploit Available (50/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.14%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2022-43515

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2022-43515

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 2026-05-21 0.18% 0.14% -0.05%
2 2026-04-14 0.11% 0.18% +0.07%
3 2025-11-21 — 0.11% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-43515

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
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]
9.8 3.1 CRITICAL
CVSS:3.1/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]

Weakness enumeration for CVE-2022-43515

OS Trackers for CVE-2022-43515

vendor priority summary link
debian not yet assigned CVE-2022-43515 not yet assigned priority: Debian including 1 source packages (zabbix), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2022-43515
suse medium CVE-2022-43515 severity moderate: SUSE including 1 source package names (zabbix-agent-4.0.12-4.21.1), 10 product×package rows across 10 product lines (SUSE Linux Enterprise Server 12 SP3-BCL, SUSE Linux Enterprise Server 12 SP3-LTSS-TERADATA, … (10 product lines)): Fixed 10. https://www.suse.com/security/cve/CVE-2022-43515/
ubuntu medium CVE-2022-43515 medium priority: Ubuntu including 1 source packages (zabbix), 13 status rows across 13 suites (bionic, focal, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 7, ignored 2, needed 2, DNE 1, released 1. https://ubuntu.com/security/CVE-2022-43515

Affected software / configurations for CVE-2022-43515

Vendor Product Version Raw CPE
zabbix frontend >= 4.0.0, <= 4.0.44 cpe:2.3:a:zabbix:frontend:*:*:*:*:*:*:*:*
zabbix frontend >= 5.0.0, <= 5.0.29 cpe:2.3:a:zabbix:frontend:*:*:*:*:*:*:*:*
zabbix frontend >= 6.0.0, <= 6.0.9 cpe:2.3:a:zabbix:frontend:*:*:*:*:*:*:*:*
zabbix frontend >= 6.2.0, <= 6.2.4 cpe:2.3:a:zabbix:frontend:*:*:*:*:*:*:*:*
zabbix frontend 5.0.30 cpe:2.3:a:zabbix:frontend:5.0.30:rc1:*:*:*:*:*:*
zabbix frontend 6.0.11 cpe:2.3:a:zabbix:frontend:6.0.11:rc1:*:*:*:*:*:*
zabbix frontend 6.2.5 cpe:2.3:a:zabbix:frontend:6.2.5:rc1:*:*:*:*:*:*

References for CVE-2022-43515

cvelogic Threat Intelligence