How severe is CVE-2026-35025?

CVE-2026-35025 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-35025 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-35025?

CVE-2026-35025 primarily affects Proftpd. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-35025?

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.

Does CVE-2026-35025 have an EU (EUVD) identifier?

Yes. CVE-2026-35025 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38789.

When was CVE-2026-35025 published?

CVE-2026-35025 was published on 2026-06-24 and last updated on 2026-07-02.

CVE-2026-35025

CVE-2026-35025 is a high-severity vulnerability in Proftpd with a CVSS 3.x base score of 8.1. 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: High (CVSS 3.x base score 8.1)
CVSS v4: 8.6
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-38789
Weakness: CWE-59
Affected product: Proftpd
Published: 2026-06-24
Last modified: 2026-07-02

Description

ProFTPD through 1.3.9b and 1.3.10rc2 contains an access control bypass vulnerability that allows authenticated FTP users to circumvent Directory ACL restrictions by prefixing paths with /proc/self/root in the RNFR command handler. Attackers can exploit the unresolved symlink components in dir_canonical_path() to cause dir_check() to perform lexical path comparisons that match no configured Directory block, enabling rename operations on files in DenyAll-protected directories and subsequent retrieval of those files. Mitigation: Sessions configured with DefaultRoot (chroot) are not affected, as chroot changes the directory to which /proc/self/root resolves.

Frequently asked questions

What is CVE-2026-35025?: ProFTPD through 1.3.9b and 1.3.10rc2 contains an access control bypass vulnerability that allows authenticated FTP users to circumvent Directory ACL restrictions by prefixing paths with /proc/self/root in the RNFR command handler. Attackers can exploit the unresolved symlink components in dir_canonical_path() to cause dir_check() to perform lexical path comparisons that match no configured Directory block, enabling rename operations on files in DenyAll-protected directories and subsequent retrieval of those files. Mitigation: Sessions configured with DefaultRoot (chroot) are not affected, as chroot changes the directory to which /proc/self/root resolves.
How severe is CVE-2026-35025?: CVE-2026-35025 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-35025 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-35025?: CVE-2026-35025 primarily affects Proftpd. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-35025?: 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.
Does CVE-2026-35025 have an EU (EUVD) identifier?: Yes. CVE-2026-35025 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38789.
When was CVE-2026-35025 published?: CVE-2026-35025 was published on 2026-06-24 and last updated on 2026-07-02.

References

Affected products (3)

cpe:2.3:a:proftpd:proftpd:*:*:*:*:*:*:*:*
cpe:2.3:a:proftpd:proftpd:1.3.10:rc1:*:*:*:*:*:*
cpe:2.3:a:proftpd:proftpd:1.3.10:rc2:*:*:*:*:*:*

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