How severe is CVE-2018-6542?

CVE-2018-6542 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-6542 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-6542?

CVE-2018-6542 affects Gdraheim Zziplib. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-6542?

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

When was CVE-2018-6542 published?

CVE-2018-6542 was published on 2018-02-02 and last updated on 2026-06-17.

CVE-2018-6542

CVE-2018-6542 is a medium-severity vulnerability in Gdraheim Zziplib with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Gdraheim Zziplib
Published: 2018-02-02
Last modified: 2026-06-17

Description

In ZZIPlib 0.13.67, there is a bus error (when handling a disk64_trailer seek value) caused by loading of a misaligned address in the zzip_disk_findfirst function of zzip/mmapped.c.

Frequently asked questions

What is CVE-2018-6542?: In ZZIPlib 0.13.67, there is a bus error (when handling a disk64_trailer seek value) caused by loading of a misaligned address in the zzip_disk_findfirst function of zzip/mmapped.c.
How severe is CVE-2018-6542?: CVE-2018-6542 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-6542 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-6542?: CVE-2018-6542 affects Gdraheim Zziplib. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-6542?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-6542 published?: CVE-2018-6542 was published on 2018-02-02 and last updated on 2026-06-17.

References

https://github.com/gdraheim/zziplib/issues/17

Affected products (1)

cpe:2.3:a:gdraheim:zziplib:0.13.67:*:*:*:*:*:*:*

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