How severe is CVE-2018-18599?

CVE-2018-18599 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-18599 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-18599?

CVE-2018-18599 affects Guardianproject Stegdetect. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-18599?

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.

When was CVE-2018-18599 published?

CVE-2018-18599 was published on 2018-10-23 and last updated on 2026-06-17.

CVE-2018-18599

CVE-2018-18599 is a high-severity vulnerability in Guardianproject Stegdetect with a CVSS 3.x base score of 8.8. 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-787.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Guardianproject Stegdetect
Published: 2018-10-23
Last modified: 2026-06-17

Description

Stegdetect through 2018-05-26 has an out-of-bounds write in f5_compress in the f5.c file.

Frequently asked questions

What is CVE-2018-18599?: Stegdetect through 2018-05-26 has an out-of-bounds write in f5_compress in the f5.c file.
How severe is CVE-2018-18599?: CVE-2018-18599 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-18599 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-18599?: CVE-2018-18599 affects Guardianproject Stegdetect. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-18599?: 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.
When was CVE-2018-18599 published?: CVE-2018-18599 was published on 2018-10-23 and last updated on 2026-06-17.

References

https://github.com/abeluck/stegdetect/issues/10

Affected products (1)

cpe:2.3:a:guardianproject:stegdetect:*:*:*:*:*:*:*:*

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