CVE-2018-4300

The session cookie generated by the CUPS web interface was easy to guess on Linux, allowing unauthorized scripted access to the web interface when the web interface is enabled. This issue affected versions prior to v2.2.10.

Published: 2019-04-03 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-4300 is rated Moderate Risk (44.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.38%). 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-2018-4300

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 2026-04-13 0.49% 0.38% -0.11%
2 2026-02-15 0.38% 0.49% +0.11%
3 2025-09-03 — 0.38% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-4300

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.9 3.0 MEDIUM
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/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:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
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:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.2 3.6 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2018-4300

OS Trackers for CVE-2018-4300

vendor priority summary link
debian not yet assigned CVE-2018-4300 not yet assigned priority: Debian including 1 source packages (cups), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2018-4300
redhat medium — https://access.redhat.com/security/cve/CVE-2018-4300
suse high CVE-2018-4300 severity important: SUSE including 13 source package names (cups, cups-client, …), 221 product×package rows across 56 product lines (HPE Helion OpenStack 8, SLES for SAP Applications 11 SP3, … (56 product lines)): Known Not Affected 221. https://www.suse.com/security/cve/CVE-2018-4300/
ubuntu medium CVE-2018-4300 medium priority: Ubuntu including 1 source packages (cups), 6 status rows across 6 suites (bionic, cosmic, focal, trusty, upstream, xenial): released 5, not-affected 1. https://ubuntu.com/security/CVE-2018-4300

Affected software / configurations for CVE-2018-4300

Vendor Product Version Raw CPE
apple cups < 2.2.10 cpe:2.3:a:apple:cups:*:*:*:*:*:*:*:*

References for CVE-2018-4300

cvelogic Threat Intelligence