How severe is CVE-2025-66877?

CVE-2025-66877 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-66877 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-66877?

CVE-2025-66877 affects Libming. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-66877?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-66877 have an EU (EUVD) identifier?

Yes. CVE-2025-66877 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-205623.

When was CVE-2025-66877 published?

CVE-2025-66877 was published on 2025-12-29 and last updated on 2026-06-17.

CVE-2025-66877

CVE-2025-66877 is a high-severity vulnerability in Libming with a CVSS 3.x base score of 7.5. 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-121.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-205623
Weakness: CWE-121
Affected product: Libming
Published: 2025-12-29
Last modified: 2026-06-17

Description

Buffer overflow vulnerability in function dcputchar in decompile.c in libming 0.4.8.

Frequently asked questions

What is CVE-2025-66877?: Buffer overflow vulnerability in function dcputchar in decompile.c in libming 0.4.8.
How severe is CVE-2025-66877?: CVE-2025-66877 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-66877 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-66877?: CVE-2025-66877 affects Libming. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-66877?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-66877 have an EU (EUVD) identifier?: Yes. CVE-2025-66877 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-205623.
When was CVE-2025-66877 published?: CVE-2025-66877 was published on 2025-12-29 and last updated on 2026-06-17.

References

https://github.com/libming/libming/issues/367

Affected products (1)

cpe:2.3:a:libming:libming:0.4.8:*:*:*:*:*:*:*

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