CVE-2026-35025

HIGHPre-NVD 8.18.1
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-06-24. A secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week

Also known asEUVD-2026-38789 (ENISA EUVD) · GHSA-9vr4-2f43-pc8v (GitHub Security Advisories)Source: ENISA EUVD

8.1EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 8.1Exploit: None knownExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

The CVE record's CNA (VulnCheck) lists ProFTPD Project ProFTPD versions up to and including 1.3.9b and up to and including 1.3.10rc2 as affected. No release containing a fix is confirmed on record.

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.

CVSS v3
8.1
EG Score
8.1HIGHmedium confidence
EG Risk
37
EG Risk 37/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity81% × 45%
Impact severity (EG Severity): CVSS 8.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.5%
EPSS %ILE
42nd
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (8.1): severity, escalated by confirmed exploitation. This CVE's 8.1 is its impact severity (EG Severity), not escalated.

EG Severity
8.1 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-25). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

June 24, 2026

Last Modified

October 25, 2026

Advisory Details (3)

Auto-updated Jun 24, 2026
No fix on record yet.
Web page

ProFTPD ACL Bypass via /proc/self/root Path Prefix in RNFR | Advisories | VulnCheck

https://www.vulncheck.com/advisories/proftpd-acl-bypass-via-proc-self-root-path-prefix-in-rnfr
Web page

Security Advisory: Post-authentication access control bypass via `/proc/self/root` in `RNFR` · Issue #2170 · proftpd/proftpd · GitHub

https://github.com/proftpd/proftpd/issues/2170
Web page

The ProFTPD Project: Home

http://www.proftpd.org/

Vendor Advisories for CVE-2026-35025(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
proftpd-dfsg1.3.7a+dfsg-12 ... 1.3.9~dfsg-5 (36 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
proftpd-dfsg1.3.8+dfsg-4 ... 1.3.9~dfsg-5 (28 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
proftpd-dfsg1.3.8.c+dfsg-4 ... 1.3.9~dfsg-5 (13 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
proftpd-dfsg1.3.8.c+dfsg-4 ... 1.3.9~dfsg-5 (10 versions)
  • every version on: no fix on record
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 41× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 99 of 281 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 1 repeat row among the latest 100 is merged into the row it repeats. The 182 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  2. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  3. 2026-10-25 23:33 UTCEG score recompute
  4. 2026-10-25 23:33 UTCGHSA enrichmentGHSA-9vr4-2f43-pc8v · GitHub severity HIGH · GitHub CVSS 8.1
  5. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  6. 2026-10-25 14:33 UTCEG score recompute
  7. 2026-10-24 21:25 UTCEG score recompute
  8. 2026-10-24 21:25 UTCGHSA enrichmentGHSA-9vr4-2f43-pc8v · GitHub severity HIGH · GitHub CVSS 8.1
  9. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  10. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  11. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  12. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  13. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  14. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  15. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  16. 2026-10-18 03:45 UTCEG score recompute
  17. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  18. 2026-10-17 15:26 UTCEG score recompute
  19. 2026-10-17 15:26 UTCGHSA enrichmentGHSA-9vr4-2f43-pc8v · GitHub severity HIGH · GitHub CVSS 8.1
  20. 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  21. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  22. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  23. 2026-10-14 05:54 UTCOSV refresh
  24. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  25. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
Show 74 more
  1. 2026-10-12 16:12 UTCEG score recompute
  2. 2026-10-11 19:54 UTCEG score recompute
  3. 2026-10-11 17:07 UTCEG score recompute
  4. 2026-10-11 14:34 UTCEG score recompute
  5. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  6. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  7. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  8. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  9. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  10. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  11. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  12. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  13. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  14. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  15. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  16. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  17. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  18. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  19. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  20. 2026-09-23 11:48 UTCEG score recompute
  21. 2026-09-23 11:48 UTCGHSA enrichmentGHSA-9vr4-2f43-pc8v · GitHub severity HIGH · GitHub CVSS 8.1
  22. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  23. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  24. 2026-09-18 08:10 UTCEG score recompute
  25. 2026-09-18 08:10 UTCGHSA enrichmentGHSA-9vr4-2f43-pc8v · GitHub severity HIGH · GitHub CVSS 8.1
  26. 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  27. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  28. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  29. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  30. 2026-09-14 01:57 UTCEG score recompute
  31. 2026-09-14 01:57 UTCGHSA enrichmentGHSA-9vr4-2f43-pc8v · GitHub severity HIGH · GitHub CVSS 8.1
  32. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  33. 2026-09-13 12:02 UTCEG score recompute
  34. 2026-09-13 12:02 UTCGHSA enrichmentGHSA-9vr4-2f43-pc8v · GitHub severity HIGH · GitHub CVSS 8.1
  35. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  36. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  37. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  38. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  39. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  40. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  41. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  42. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  43. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  44. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  45. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  46. 2026-08-30 20:21 UTCEG score recompute
  47. 2026-08-30 20:20 UTCGHSA enrichmentGHSA-9vr4-2f43-pc8v · GitHub severity HIGH · GitHub CVSS 8.1
  48. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  49. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  50. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  51. 2026-08-28 04:51 UTCEG score recompute
  52. 2026-08-28 04:51 UTCGHSA enrichmentGHSA-9vr4-2f43-pc8v · GitHub severity HIGH · GitHub CVSS 8.1
  53. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  54. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  55. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  56. 2026-08-25 01:33 UTCEG score recompute
  57. 2026-08-25 01:33 UTCGHSA enrichmentGHSA-9vr4-2f43-pc8v · GitHub severity HIGH · GitHub CVSS 8.1
  58. 2026-08-24 13:47 UTCEG score recompute
  59. 2026-08-24 13:47 UTCGHSA enrichmentGHSA-9vr4-2f43-pc8v · GitHub severity HIGH · GitHub CVSS 8.1
  60. 2026-08-24 00:34 UTCGHSA enrichmentGHSA-9vr4-2f43-pc8v · GitHub severity HIGH · GitHub CVSS 8.1
  61. 2026-08-23 12:47 UTCGHSA enrichmentGHSA-9vr4-2f43-pc8v · GitHub severity HIGH · GitHub CVSS 8.1
  62. 2026-08-23 01:01 UTCEG score recompute
  63. 2026-08-23 01:01 UTCGHSA enrichmentGHSA-9vr4-2f43-pc8v · GitHub severity HIGH · GitHub CVSS 8.1
  64. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  65. 2026-08-22 13:14 UTCEG score recompute
  66. 2026-08-22 13:14 UTCGHSA enrichmentGHSA-9vr4-2f43-pc8v · GitHub severity HIGH · GitHub CVSS 8.1
  67. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  68. 2026-08-21 19:07 UTCGHSA enrichmentGHSA-9vr4-2f43-pc8v · GitHub severity HIGH · GitHub CVSS 8.1
  69. 2026-08-21 07:19 UTCEG score recompute
  70. 2026-08-21 07:19 UTCGHSA enrichmentGHSA-9vr4-2f43-pc8v · GitHub severity HIGH · GitHub CVSS 8.1
  71. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  72. 2026-08-20 19:22 UTCGHSA enrichmentGHSA-9vr4-2f43-pc8v · GitHub severity HIGH · GitHub CVSS 8.1
  73. 2026-08-20 07:35 UTCEG score recompute
  74. 2026-08-20 07:35 UTCGHSA enrichmentGHSA-9vr4-2f43-pc8v · GitHub severity HIGH · GitHub CVSS 8.1

Frequently asked(5)

What is CVE-2026-35025?
CVE-2026-35025 is a high-severity vulnerability; its CVE record was published on June 24, 2026. 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…
When was CVE-2026-35025 made public?
CVE-2026-35025 was made public on June 23, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on June 24, 2026. EchelonGraph's copy of the record carries a last-modified date of October 25, 2026; the record at its source may have been updated since.
Is CVE-2026-35025 actively exploited?
CVE-2026-35025 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (42nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-35025?
CVE-2026-35025 has a CVSS base score of 8.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-35025?
No fix for CVE-2026-35025 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The CVE record's CNA (VulnCheck) lists ProFTPD Project ProFTPD versions up to and including 1.3.9b and up to and including 1.3.10rc2 as affected. No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-35025 are linked in the Vendor Advisories panel on this page.

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