CVE-2026-33799

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

Score 4.3 from GitHub Security Advisory published 2026-07-09. a secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: None knownExposed: 0

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

An Out-of-bounds Write vulnerability in the SNMP daemon (snmpd) of Juniper Networks Junos OS and Junos OS Evolved allows an authenticated network-based attacker sending specific valid SNMPv3 queries to trigger a memory leak. Over time, continuous receipt of these queries will result in snmpd process memory exhaustion, resulting in a process crash and restart, impacting the ability to monitor the system via SNMP.

Memory usage can be monitored using the following command:

user@device> show system processes extensive | match snmpd

This issue affects:

Junos OS:

* all versions before 21.2R3-S8; * from 21.4 before 21.4R3-S7; * from 22.1 before 22.1R3-S6; * from 22.2 before 22.2R3-S4; * from 22.3 before 22.3R3-S3; * from 22.4 before 22.4R3-S2; * from 23.2 before 23.2R2; * from 23.4 before 23.4R2.

Junos OS Evolved: * all versions before 21.2R3-S8-EVO; * from 21.4 before 21.4R3-S7-EVO; * all versions of 22.1-EVO, * from 22.2 before 22.2R3-S4-EVO; * from 22.3 before 22.3R3-S3-EVO; * all versions of 22.4-EVO, * from 23.2 before 23.2R2-EVO; * from 23.4 before 23.4R2-EVO.

CVSS v3
4.3
EG Score
4.3(medium)
EG Risk
19(Track)
EG Risk 19/100SSVC: 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
Severity43% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
30%
KEV
Not listed

Published

July 9, 2026

Last Modified

July 13, 2026

Advisory Details (1)

Auto-updated Jul 9, 2026
No patch confirmed yet.
generic

CEC Juniper Community

https://supportportal.juniper.net/JSA110074

Vendor Advisories for CVE-2026-33799(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 18× in last 7d / 83× 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 129 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-33799?
CVE-2026-33799 is a medium vulnerability published on July 9, 2026. An Out-of-bounds Write vulnerability in the SNMP daemon (snmpd) of Juniper Networks Junos OS and Junos OS Evolved allows an authenticated network-based attacker sending specific valid SNMPv3 queries to trigger a memory leak. Over time, continuous receipt of these queries will result in snmpd…
When was CVE-2026-33799 disclosed?
CVE-2026-33799 was first published in the National Vulnerability Database on July 9, 2026, with the most recent update on July 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-33799 actively exploited?
CVE-2026-33799 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 70.5% of all scored CVEs.
What is the CVSS score of CVE-2026-33799?
CVE-2026-33799 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-33799?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-33799, 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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