CVE-2026-27884

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 74% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

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

NetExec is a network execution tool. Prior to version 1.5.1, the module spider_plus improperly creates the output file and folder path when saving files from SMB shares. It does not take into account that it is possible for Linux SMB shares to have path traversal characters such as ../ in them. An attacker can craft a filename in an SMB share that includes these characters, which when spider_plus crawls and downloads, can write or overwrite arbitrary files. The issue is patched in v1.5.1. As a workaround, do not run spider_plus with DOWNLOAD=true against targets.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: Track

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
Severity53% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
26%
KEV
Not listed

Published

February 26, 2026

Last Modified

June 17, 2026

Advisory Details (4)

Auto-updated Aug 4, 2026
Patch available. Sources: github_commit, github_pr, github.
github Patch Available

Arbitrary file write via path traversal in spider_plus module · Advisory · Pennyw0rth/NetExec · GitHub

Affected: v1.5.1

https://github.com/Pennyw0rth/NetExec/security/advisories/GHSA-fccr-6qm2-7h27
github_pr Patch Available

Fix for arbitrary file write via spider_plus module

Patch available: Pennyw0rth/NetExec v1.5.1 (PR #1121 merged 2026-02-21)

https://github.com/Pennyw0rth/NetExec/pull/1121
generic

spider_plus: Path traversal arbitrary file write · Issue #1120 · Pennyw0rth/NetExec · GitHub

https://github.com/Pennyw0rth/NetExec/issues/1120
github_commit Patch Available

commit 7d027f2774d0 (Pennyw0rth/NetExec)

Patch available: Pennyw0rth/NetExec v1.5.1 (contains commit 7d027f2774d0)

https://github.com/Pennyw0rth/NetExec/commit/7d027f2774d0520b322d60f9c99b9ab3edb4035e

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 28× 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 184 total refreshes for this CVE.

  1. 2026-09-18 19:28 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2026-27884?
CVE-2026-27884 is a medium vulnerability published on February 26, 2026. NetExec is a network execution tool. Prior to version 1.5.1, the module spiderplus improperly creates the output file and folder path when saving files from SMB shares. It does not take into account that it is possible for Linux SMB shares to have path traversal characters such as ../ in them. An…
When was CVE-2026-27884 disclosed?
CVE-2026-27884 was first published in the National Vulnerability Database on February 26, 2026, 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-2026-27884 actively exploited?
CVE-2026-27884 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 73.7% of all scored CVEs.
What is the CVSS score of CVE-2026-27884?
CVE-2026-27884 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-27884?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-27884, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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