CVE-2017-7494

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2023-03-30), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.8EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 99%CVSS: 9.8Exploit: cisa kev · ssvc active · kev ransomware · Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed services: Not assessed

A fix is available — apply it.

Samba since version 3.5.0 and before 4.6.4, 4.5.10 and 4.4.14 is vulnerable to remote code execution vulnerability, allowing a malicious client to upload a shared library to a writable share, and then cause the server to load and execute it.

CVSS v3
9.8
EG Score
9.8CRITICALhigh confidence
EG Risk
99
EG Risk 99/100CISA SSVC

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
Severity98% × 45%
Exploitation100% × 40%
Automatability100% × 15%
CISA SSVC: Attend at low mission impact; Act at medium or high.
Action: A fix is available. Apply it sooner than your standard update timelines at low mission impact and as soon as possible at medium or high.
EPSS PROB
99%
EPSS %ILE
99th
KEV
⚠ Exploited

CISA SSVCAttend at low mission impact; Act at medium or high.

A fix is available. Apply it sooner than your standard update timelines at low mission impact and as soon as possible at medium or high.

Exploitation active (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

May 30, 2017

Last Modified

June 17, 2026

Advisory Details (9)

Auto-updated Oct 5, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: redhat.
generic
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbns03755en_us
redhat Patch Available

Affected: Red Hat Enterprise Linux 6.2 Advanced Update Support, Red Hat Enterprise Linux 6.4 Advanced Update Support, Red Hat Enterprise

https://access.redhat.com/errata/RHSA-2017:1390
redhat Patch Available
https://access.redhat.com/errata/RHSA-2017:1273
redhat Patch Available

Affected: Red Hat Enterprise Linux 5 Extended

https://access.redhat.com/errata/RHSA-2017:1272
redhat Patch Available

Affected: Red Hat Enterprise Linux 6.

https://access.redhat.com/errata/RHSA-2017:1271
redhat Patch Available

Affected: Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHSA-2017:1270
generic🔴 Active Exploitation

CVE-2017-7494 - PSIRT.COM

http://www.securityfocus.com/bid/98636
generic

[SECURITY] [DSA 3860-1] samba security update

http://www.debian.org/security/2017/dsa-3860
generic
http://www.securitytracker.com/id/1038552

Patch Availability(7)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntusamba (2:4.5.8+dfsg-0ubuntu0.17.04.2) @ zesty2026-10-05ubuntu
ubuntusamba (2:3.6.25-0ubuntu0.12.04.11) @ precise2026-10-05ubuntu
redhatsamba-0:4.2.10-11.el7_22017-06-05redhat
redhatsamba4-0:4.2.10-10.el6_92017-05-24redhat
redhatsamba3x-0:3.6.23-14.el5_112017-05-24redhat
redhatsamba-0:4.4.4-14.el7_32017-05-24redhat
redhatsamba-0:4.4.6-5.el7rhgs2017-05-24redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(8 across 8 ecosystems)
Alpine:v3.3(1)
PackageVulnerable rangeFix by version rangeDependents
samba—
  • 3.5.0 up to 4.2.14-r3: fixed in 4.2.14-r3
—
Alpine:v3.4(1)
PackageVulnerable rangeFix by version rangeDependents
samba—
  • 3.5.0 up to 4.4.14-r0: fixed in 4.4.14-r0
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
samba—
  • every version up to 2:4.5.8+dfsg-2: fixed in 2:4.5.8+dfsg-2
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
samba—
  • every version up to 2:4.5.8+dfsg-2: fixed in 2:4.5.8+dfsg-2
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
samba—
  • every version up to 2:4.5.8+dfsg-2: fixed in 2:4.5.8+dfsg-2
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
samba—
  • every version up to 2:4.5.8+dfsg-2: fixed in 2:4.5.8+dfsg-2
—
Debian:7(1)
PackageVulnerable rangeFix by version rangeDependents
samba2:3.6.6-6 ... 2:3.6.6-6+deb7u9 (17 versions)
  • every version up to 2:3.6.6-6+deb7u13: fixed in 2:3.6.6-6+deb7u13
—
Debian:8(1)
PackageVulnerable rangeFix by version rangeDependents
samba2:4.1.17+dfsg-2 ... 2:4.2.14+dfsg-0+deb8u5 (19 versions)
  • every version up to 2:4.2.14+dfsg-0+deb8u6: fixed in 2:4.2.14+dfsg-0+deb8u6
—

Weakness Classification(1)

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

All Vendor Advisories

(7)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 82× in last 7d / 364× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 1,561 total refreshes for this CVE.

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

Publicly available exploits

(10 references)

Working exploit code is in the public domain (1 Metasploit module) (7 GitHub PoCs) (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-42084✓ verified
    First seen May 29, 2017

    Samba 3.5.0 < 4.4.14/4.5.10/4.6.4 - 'is_known_pipename()' Arbitrary Module Load (Metasploit)

    Open source ↗
  • Exploit-DBEDB-42060✓ verified
    First seen May 24, 2017

    Samba 3.5.0 - Remote Code Execution

    Open source ↗
  • Metasploitexploit/linux/samba/is_known_pipename✓ verified
    First seen Mar 24, 2017

    Samba is_known_pipename() Arbitrary Module Load

    Open source ↗
  • GitHub PoCYonLiud/CVE-2017-7494
    First seen Aug 15, 2026

    SambaCry Explanation and Exploitation Demo

    Open source ↗
  • GitHub PoCd3fudd/CVE-2017-7494_SambaCry
    First seen Nov 1, 2022

    SambaCry (CVE-2017-7494) exploit for Samba | bind shell without Metasploit

    Open source ↗
  • GitHub PoCI-Rinka/BIT-EternalBlue-for-macOS_Linux
    First seen May 15, 2021

    Exploit CVE-2017-7494 for Net Security course final Assignment. This would reveal the vulnerability of services that run in administrative priority on Linux.

    Open source ↗
  • GitHub PoC0xm4ud/noSAMBAnoCRY-CVE-2017-7494
    First seen May 9, 2021

    CVE-2017-7494 python exploit

    Open source ↗
  • GitHub PoCjoxeankoret/CVE-2017-7494
    First seen Jun 5, 2017

    Remote root exploit for the SAMBA CVE-2017-7494 vulnerability

    Open source ↗
  • GitHub PoCbrianwrf/SambaHunter
    First seen May 30, 2017

    It is a simple script to exploit RCE for Samba (CVE-2017-7494 ).

    Open source ↗
  • GitHub PoCopsxcq/exploit-CVE-2017-7494
    First seen May 26, 2017

    SambaCry exploit and vulnerable container (CVE-2017-7494)

    Open source ↗

Related CVEs(same product + same CWE)

Frequently asked(6)

What is CVE-2017-7494?
CVE-2017-7494 is a critical vulnerability published on May 30, 2017. Samba since version 3.5.0 and before 4.6.4, 4.5.10 and 4.4.14 is vulnerable to remote code execution vulnerability, allowing a malicious client to upload a shared library to a writable share, and then cause the server to load and execute it.
When was CVE-2017-7494 disclosed?
CVE-2017-7494 was first published on May 30, 2017, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-7494 actively exploited?
Yes. CISA added CVE-2017-7494 to the Known Exploited Vulnerabilities catalog on March 30, 2023, affecting Samba Samba. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate attention. A fix is available. Apply it.
What is the CVSS score of CVE-2017-7494?
CVE-2017-7494 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2017-7494?
CVE-2017-7494 affects Samba Samba. The affected packages EchelonGraph has on record, with version ranges, are listed in the Affected Packages section of this page.
How do I remediate CVE-2017-7494?
A fix for CVE-2017-7494 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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