CVE-2026-48695

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-05-26. NVD baseline CVSS 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.1Exploit: None knownExposed: 0

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

FastNetMon Community Edition through 1.2.9 contains an OS command injection vulnerability in the MikroTik router integration plugin. The _log() function in src/mikrotik_plugin/fastnetmon_mikrotik.php (lines 107-108) constructs shell commands by concatenating the $msg parameter directly into exec() calls: exec("echo date \"- {FASTNETMON] - " . $msg . " \" >> " . $FILE_LOG_TMP). This is identical in pattern to the Juniper plugin vulnerability. The $msg variable contains unsanitized attack data from command-line arguments. An attacker who can influence argv[] values can inject arbitrary shell commands. The fix is to replace exec() with file_put_contents() or use escapeshellarg().

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity81% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
63%
KEV
Not listed

Published

May 26, 2026

Last Modified

July 21, 2026

Advisory Details (3)

Auto-updated Jun 3, 2026
No patch confirmed yet.
generic

CVE-2026-48695: OS Command Injection in FastNetMon's MikroTik Plugin (Plus Hardcoded Credentials) | Lorikeet Security

https://lorikeetsecurity.com/blog/fastnetmon-cve-2026-48695-mikrotik-cmd-injection
generic

fastnetmon/src/mikrotik_plugin/fastnetmon_mikrotik.php at master · pavel-odintsov/fastnetmon · GitHub

https://github.com/pavel-odintsov/fastnetmon/blob/master/src/mikrotik_plugin/fastnetmon_mikrotik.php
generic

GitHub - pavel-odintsov/fastnetmon: Very fast DDoS sensor with sFlow/Netflow/IPFIX/SPAN support · GitHub

https://github.com/pavel-odintsov/fastnetmon

Vendor Advisories for CVE-2026-48695(1)

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

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
fastnetmon1.2.4-2 ... 1.2.9-1 (14 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
fastnetmon1.2.8+git20250911-1, 1.2.8+git20250911-2, 1.2.8-11.2.9-0+deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
fastnetmon1.2.8+git20250911-1, 1.2.8+git20250911-2, 1.2.8-11.2.9-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 61× 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 210 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-48695?
CVE-2026-48695 is a high vulnerability published on May 26, 2026. FastNetMon Community Edition through 1.2.9 contains an OS command injection vulnerability in the MikroTik router integration plugin. The log() function in src/mikrotikplugin/fastnetmonmikrotik.php (lines 107-108) constructs shell commands by concatenating the $msg parameter directly into exec()…
When was CVE-2026-48695 disclosed?
CVE-2026-48695 was first published in the National Vulnerability Database on May 26, 2026, with the most recent update on July 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48695 actively exploited?
CVE-2026-48695 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 37.4% of all scored CVEs.
What is the CVSS score of CVE-2026-48695?
CVE-2026-48695 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-48695?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-48695, 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.

Dependency Blast Radius

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