How severe is CVE-2018-12088?

CVE-2018-12088 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 high, and availability none.

Is CVE-2018-12088 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-2018-12088?

CVE-2018-12088 affects S3ql Project S3ql. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-12088?

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-2018-12088 published?

CVE-2018-12088 was published on 2018-06-10 and last updated on 2026-06-17.

CVE-2018-12088

CVE-2018-12088 is a high-severity vulnerability in S3ql Project S3ql 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-20.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: S3ql Project S3ql
Published: 2018-06-10
Last modified: 2026-06-17

Description

S3QL before 2.27 mishandles checksumming, and consequently allows replay attacks in which an attacker who controls the backend can present old versions of the filesystem metadata database as up-to-date, temporarily inject zero-valued bytes into files, or temporarily hide parts of files. This is related to the checksum_basic_mapping function.

Frequently asked questions

What is CVE-2018-12088?: S3QL before 2.27 mishandles checksumming, and consequently allows replay attacks in which an attacker who controls the backend can present old versions of the filesystem metadata database as up-to-date, temporarily inject zero-valued bytes into files, or temporarily hide parts of files. This is related to the checksum_basic_mapping function.
How severe is CVE-2018-12088?: CVE-2018-12088 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 high, and availability none.
Is CVE-2018-12088 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-2018-12088?: CVE-2018-12088 affects S3ql Project S3ql. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-12088?: 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-2018-12088 published?: CVE-2018-12088 was published on 2018-06-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:s3ql_project:s3ql:*:*:*:*:*:*:*:*

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