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
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 8.1Exploit: NoneExposed: 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)
EPSS
61.0%
KEV
Not listed

Published

May 26, 2026

Last Modified

May 27, 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.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 59× 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 154 total refreshes for this CVE.

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

Related CVEs(same CWE)

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 May 27, 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 61.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
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.

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