How severe is CVE-2026-8784?

CVE-2026-8784 has a CVSS 3.x base score of 4.2, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-8784 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-8784?

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

Does CVE-2026-8784 have an EU (EUVD) identifier?

Yes. CVE-2026-8784 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30728.

When was CVE-2026-8784 published?

CVE-2026-8784 was published on 2026-05-18 and last updated on 2026-06-17.

CVE-2026-8784

CVE-2026-8784 is a medium-severity vulnerability with a CVSS 3.x base score of 4.2. 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-59.

Key facts

Severity: Medium (CVSS 3.x base score 4.2)
CVSS v2: 4.0
CVSS v4: 1.8
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30728
Weakness: CWE-59
Published: 2026-05-18
Last modified: 2026-06-17

Description

A vulnerability was detected in npitre cramfs-tools up to 2.2. Affected is the function change_file_status of the file cramfsck.c. Performing a manipulation results in symlink following. The attack requires a local approach. The exploit is now public and may be used. The patch is named b4a3a695c9873f824907bd15659f2a6ac7667b4f. It is recommended to apply a patch to fix this issue.

Frequently asked questions

What is CVE-2026-8784?: A vulnerability was detected in npitre cramfs-tools up to 2.2. Affected is the function change_file_status of the file cramfsck.c. Performing a manipulation results in symlink following. The attack requires a local approach. The exploit is now public and may be used. The patch is named b4a3a695c9873f824907bd15659f2a6ac7667b4f. It is recommended to apply a patch to fix this issue.
How severe is CVE-2026-8784?: CVE-2026-8784 has a CVSS 3.x base score of 4.2, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-8784 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-8784?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-8784 have an EU (EUVD) identifier?: Yes. CVE-2026-8784 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30728.
When was CVE-2026-8784 published?: CVE-2026-8784 was published on 2026-05-18 and last updated on 2026-06-17.

References

Other CWE-59 (Improper Link Resolution Before File Access (Link Following)) vulnerabilities

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