How severe is CVE-2026-7837?

CVE-2026-7837 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-7837 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-7837?

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

Does CVE-2026-7837 have an EU (EUVD) identifier?

Yes. CVE-2026-7837 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31245.

When was CVE-2026-7837 published?

CVE-2026-7837 was published on 2026-05-21 and last updated on 2026-06-17.

CVE-2026-7837

CVE-2026-7837 is a low-severity vulnerability with a CVSS 3.x base score of 3.7. 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-367.

Key facts

Severity: Low (CVSS 3.x base score 3.7)
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-31245
Weakness: CWE-367
Published: 2026-05-21
Last modified: 2026-06-17

Description

A time-of-check time-of-use (TOCTOU) condition in the ad_flush function in Netatalk 3.0.0 through 4.4.2 involves root-privileged file operations, which may allow a remote attacker to cause limited data modification under specific race conditions.

Frequently asked questions

What is CVE-2026-7837?: A time-of-check time-of-use (TOCTOU) condition in the ad_flush function in Netatalk 3.0.0 through 4.4.2 involves root-privileged file operations, which may allow a remote attacker to cause limited data modification under specific race conditions.
How severe is CVE-2026-7837?: CVE-2026-7837 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-7837 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-7837?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-7837 have an EU (EUVD) identifier?: Yes. CVE-2026-7837 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31245.
When was CVE-2026-7837 published?: CVE-2026-7837 was published on 2026-05-21 and last updated on 2026-06-17.

References

https://netatalk.io/security/CVE-2026-7837

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