How severe is CVE-2018-0518?

CVE-2018-0518 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-2018-0518 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-0518?

CVE-2018-0518 affects Linecorp Line. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-0518?

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

When was CVE-2018-0518 published?

CVE-2018-0518 was published on 2018-02-23 and last updated on 2026-06-17.

CVE-2018-0518

CVE-2018-0518 is a medium-severity vulnerability in Linecorp Line 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-295.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-295
Affected product: Linecorp Line
Published: 2018-02-23
Last modified: 2026-06-17

Description

LINE for iOS version 7.1.3 to 7.1.5 does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

Frequently asked questions

What is CVE-2018-0518?: LINE for iOS version 7.1.3 to 7.1.5 does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.
How severe is CVE-2018-0518?: CVE-2018-0518 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-2018-0518 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-0518?: CVE-2018-0518 affects Linecorp Line. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-0518?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-0518 published?: CVE-2018-0518 was published on 2018-02-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:linecorp:line:*:*:*:*:*:iphone_os:*:*

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