CVE-2026-57023

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-10. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

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

An Improper Validation of Specified Quantity in Input vulnerability in the TCP proxy plugin of Juniper Networks Junos OS on MX Series with SPC3, and SRX Series allows an unauthenticated, network-based attacker to cause a complete Denial of Service (DoS).

When TCP proxy is engaged in a flow session, to support ALGs, Advanced Anti-Malware, ICAP or UTM, a TCP packet with specifically malformed TCP header will cause flow processing daemon (flowd) to crash and restart. This causes a complete service outage until the system has automatically recovered.

This issue affects Junos OS on MX with SPC3, and SRX Series: 

* 23.4 versions before 23.4R2-S7,  * 24.2 versions before 24.2R2-S4,  * 24.4 versions before 24.4R2-S3, * 25.2 versions before 25.2R2.

This issue does not affect releases before 23.4R1.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
38%
KEV
Not listed

Published

July 9, 2026

Last Modified

July 14, 2026

Advisory Details (1)

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

CEC Juniper Community

https://supportportal.juniper.net/JSA110083

Vendor Advisories for CVE-2026-57023(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 25× in last 7d / 117× 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 164 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-57023?
CVE-2026-57023 is a high vulnerability published on July 9, 2026. An Improper Validation of Specified Quantity in Input vulnerability in the TCP proxy plugin of Juniper Networks Junos OS on MX Series with SPC3, and SRX Series allows an unauthenticated, network-based attacker to cause a complete Denial of Service (DoS). When TCP proxy is engaged in a flow session,…
When was CVE-2026-57023 disclosed?
CVE-2026-57023 was first published in the National Vulnerability Database on July 9, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-57023 actively exploited?
CVE-2026-57023 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 62.1% of all scored CVEs.
What is the CVSS score of CVE-2026-57023?
CVE-2026-57023 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-57023?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-57023, 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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