How severe is CVE-2018-4300?

CVE-2018-4300 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2018-4300 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-4300?

CVE-2018-4300 affects Apple Cups. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-4300?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-4300 published?

CVE-2018-4300 was published on 2019-04-03 and last updated on 2026-06-17.

CVE-2018-4300

CVE-2018-4300 is a medium-severity vulnerability in Apple Cups with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Apple Cups
Published: 2019-04-03
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2018-4300?: CVE-2018-4300 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2018-4300 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-4300?: CVE-2018-4300 affects Apple Cups. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-4300?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-4300 published?: CVE-2018-4300 was published on 2019-04-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:apple:cups:*:*:*:*:*:*:*:*

More vulnerabilities in Apple Cups

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CVE-2008-0053 — Critical (CVSS 10.0): Multiple buffer overflows in the HP-GL/2-to-PostScript filter in CUPS before 1.3.6 might allow remote attackers to…
CVE-2012-6094 — Critical (CVSS 9.8): cups (Common Unix Printing System) 'Listen localhost:631' option not honored correctly which could provide unauthorized…
CVE-2010-2941 — Critical (CVSS 9.8): ipp.c in cupsd in CUPS 1.4.4 and earlier does not properly allocate memory for attribute values with invalid string…
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