How severe is CVE-2018-5251?

CVE-2018-5251 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-2018-5251 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-5251?

CVE-2018-5251 primarily affects Libming. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-5251?

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

When was CVE-2018-5251 published?

CVE-2018-5251 was published on 2018-01-05 and last updated on 2026-06-17.

CVE-2018-5251

CVE-2018-5251 is a medium-severity vulnerability in Libming 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. The underlying weakness is classified as CWE-681.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-681
Affected product: Libming
Published: 2018-01-05
Last modified: 2026-06-17

Description

In libming 0.4.8, there is an integer signedness error vulnerability (left shift of a negative value) in the readSBits function (util/read.c). Remote attackers can leverage this vulnerability to cause a denial of service via a crafted swf file.

Frequently asked questions

What is CVE-2018-5251?: In libming 0.4.8, there is an integer signedness error vulnerability (left shift of a negative value) in the readSBits function (util/read.c). Remote attackers can leverage this vulnerability to cause a denial of service via a crafted swf file.
How severe is CVE-2018-5251?: CVE-2018-5251 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-2018-5251 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-5251?: CVE-2018-5251 primarily affects Libming. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-5251?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-5251 published?: CVE-2018-5251 was published on 2018-01-05 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:libming:libming:0.4.8:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*

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