CVE-2026-45699

HIGHPre-NVD 7.57.5
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (37th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
7.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Netatalk is a Free and Open Source file server suite for Unix-like operating systems. In versions 3.1.19 through 4.4.2, a stack-based buffer overflow exists in the copydir() function of Netatalk's afpd daemon due to an integer underflow in the calculation of the remaining buffer size used for path construction. copydir() is a utility function called when a file operation crosses a device boundary inside an AFP shared volume, which the standard library's renameat() cannot handle. The function attempts to track available buffer space using srem and drem for source and destination paths. Incorrect arithmetic causes both srem and drem to underflow to SIZE_MAX. Consequently, boundary checks against strlen(de->d_name) always pass, allowing strcpy() to append filenames into nearly full stack buffers. Version 4.4.3 patches the issue. As a workaround, configure each AFP shared volume to be structured as a single file system, in other words no subdirectory of a shared volume should be a mount point for a different file system.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
34
EG Risk 34/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity75% × 45%
The EG Score, 7.5 of 10.
Exploitation0.4% × 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: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
37th
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines.

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

August 14, 2026

Last Modified

September 18, 2026

Advisory Details (2)

Auto-updated Aug 14, 2026
Patch available. Sources: github_release, github.
GitHub release Patch Available

Netatalk 4.4.3

Patch available: Netatalk/netatalk netatalk-4-4-3

https://github.com/Netatalk/netatalk/releases/tag/netatalk-4-4-3
GitHub advisoryMentions a patch (unverified)

Integer Underflow → Stack Buffer Overflow in copydir() · Advisory · Netatalk/netatalk · GitHub

https://github.com/Netatalk/netatalk/security/advisories/GHSA-fphv-pf29-p77m

Affected Packages

(2 across 2 ecosystems)
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
netatalk4.2.3~ds-1, 4.2.3~ds-1+deb13u1
  • every version up to 4.2.3~ds-1+deb13u2: fixed in 4.2.3~ds-1+deb13u2
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
netatalk4.2.3~ds-1, 4.2.3~ds-2, 4.2.3~ds-2.1, 4.4.1~ds-1, 4.4.2~ds-1
  • every version up to 4.4.3~ds-1: fixed in 4.4.3~ds-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 45× 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 100 of 102 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. None are among the latest 100 rows. The 2 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  3. 2026-10-12 16:04 UTCEG score recompute
  4. 2026-10-11 19:46 UTCEG score recompute
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  7. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  10. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  11. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  12. 2026-10-06 22:54 UTCEG score recompute
  13. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  14. 2026-10-06 09:21 UTCEG score recompute
  15. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 36th percentile
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  17. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  18. 2026-10-03 19:40 UTCEG score recompute
  19. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  20. 2026-10-02 21:50 UTCEG score recompute
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  22. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  23. 2026-09-30 21:40 UTCEG score recompute
  24. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  25. 2026-09-29 02:53 UTCEG score recompute
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  1. 2026-09-27 23:30 UTCEG score recompute
  2. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  3. 2026-09-27 09:35 UTCEG score recompute
  4. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  5. 2026-09-25 03:22 UTCEG score recompute
  6. 2026-09-23 22:27 UTCEG score recompute
  7. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  8. 2026-09-22 20:56 UTCEG score recompute
  9. 2026-09-22 03:22 UTCEG score recompute
  10. 2026-09-21 01:49 UTCEG score recompute
  11. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  12. 2026-09-19 23:56 UTCEG score recompute
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  14. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  15. 2026-09-18 02:03 UTCEG score recompute
  16. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  17. 2026-09-16 23:48 UTCEG score recompute
  18. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  19. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  20. 2026-09-15 14:49 UTCEG score recompute
  21. 2026-09-14 00:31 UTCEG score recompute
  22. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  23. 2026-09-12 23:00 UTCEG score recompute
  24. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  25. 2026-09-11 20:51 UTCEG score recompute
  26. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  27. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  28. 2026-09-10 19:11 UTCEG score recompute
  29. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  30. 2026-09-09 04:49 UTCEG score recompute
  31. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  32. 2026-09-07 18:54 UTCEG score recompute
  33. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  34. 2026-09-06 17:21 UTCEG score recompute
  35. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  36. 2026-09-05 15:50 UTCEG score recompute
  37. 2026-09-04 14:08 UTCEG score recompute
  38. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  39. 2026-09-02 22:48 UTCEG score recompute
  40. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 26th percentile
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  42. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  43. 2026-09-01 13:11 UTCEG score recompute
  44. 2026-08-30 21:43 UTCEG score recompute
  45. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  46. 2026-08-30 08:58 UTCEG score recompute
  47. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  48. 2026-08-29 06:54 UTCEG score recompute
  49. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  50. 2026-08-27 16:13 UTCEG score recompute
  51. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  52. 2026-08-27 03:27 UTCEG score recompute
  53. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  54. 2026-08-26 01:55 UTCEG score recompute
  55. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  56. 2026-08-25 00:23 UTCEG score recompute
  57. 2026-08-24 11:37 UTCEG score recompute
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  59. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  60. 2026-08-22 08:32 UTCEG score recompute
  61. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  62. 2026-08-21 07:00 UTCEG score recompute
  63. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  64. 2026-08-20 05:29 UTCEG score recompute
  65. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  66. 2026-08-18 15:11 UTCEG score recompute
  67. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  68. 2026-08-18 02:19 UTCEG score recompute
  69. 2026-08-18 00:14 UTCEG score recompute
  70. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  71. 2026-08-16 22:39 UTCEG score recompute
  72. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  73. 2026-08-16 09:53 UTCEG score recompute
  74. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  75. 2026-08-14 19:36 UTCEG score recompute

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-45699?
CVE-2026-45699 is a high-severity vulnerability; its CVE record was published on August 14, 2026. Netatalk is a Free and Open Source file server suite for Unix-like operating systems. In versions 3.1.19 through 4.4.2, a stack-based buffer overflow exists in the copydir() function of Netatalk's afpd daemon due to an integer underflow in the calculation of the remaining buffer size used for path…
When was the CVE record for CVE-2026-45699 published?
The CVE record for CVE-2026-45699 was published on August 14, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 18, 2026; the record at its source may have been updated since.
Is CVE-2026-45699 actively exploited?
CVE-2026-45699 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (37th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-45699?
CVE-2026-45699 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-45699?
A fix for CVE-2026-45699 is available: update to the fixed version the vendor names in its advisory.

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