How severe is CVE-2017-11423?

CVE-2017-11423 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2017-11423 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-11423?

CVE-2017-11423 affects Libmspack Project Libmspack. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-11423?

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

When was CVE-2017-11423 published?

CVE-2017-11423 was published on 2017-07-18 and last updated on 2026-06-17.

CVE-2017-11423

CVE-2017-11423 is a medium-severity vulnerability in Libmspack Project Libmspack with a CVSS 3.x base score of 5.5. 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-125.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Libmspack Project Libmspack
Published: 2017-07-18
Last modified: 2026-06-17

Description

The cabd_read_string function in mspack/cabd.c in libmspack 0.5alpha, as used in ClamAV 0.99.2 and other products, allows remote attackers to cause a denial of service (stack-based buffer over-read and application crash) via a crafted CAB file.

Frequently asked questions

What is CVE-2017-11423?: The cabd_read_string function in mspack/cabd.c in libmspack 0.5alpha, as used in ClamAV 0.99.2 and other products, allows remote attackers to cause a denial of service (stack-based buffer over-read and application crash) via a crafted CAB file.
How severe is CVE-2017-11423?: CVE-2017-11423 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2017-11423 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-11423?: CVE-2017-11423 affects Libmspack Project Libmspack. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-11423?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-11423 published?: CVE-2017-11423 was published on 2017-07-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:libmspack_project:libmspack:0.5:alpha:*:*:*:*:*:*

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