CVE-2023-36845

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2023-11-13), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 94%CVSS: 9.8Exploit: NoneExposed: 0

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

A PHP External Variable Modification vulnerability in J-Web of Juniper Networks Junos OS on EX Series

and SRX Series

allows an unauthenticated, network-based attacker to remotely execute code.

Using a crafted request which sets the variable PHPRC an attacker is able to modify the PHP execution environment allowing the injection und execution of code.

This issue affects Juniper Networks Junos OS on EX Series

and

SRX Series:

* All versions prior to

20.4R3-S9; * 21.1 versions 21.1R1 and later; * 21.2 versions prior to 21.2R3-S7; * 21.3 versions prior to 21.3R3-S5; * 21.4 versions prior to 21.4R3-S5; * 22.1 versions

prior to

22.1R3-S4; * 22.2 versions

prior to

22.2R3-S2; * 22.3 versions

prior to

22.3R2-S2, 22.3R3-S1; * 22.4 versions

prior to

22.4R2-S1, 22.4R3; * 23.2 versions prior to 23.2R1-S1, 23.2R2.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
—
EPSS
99.8%
KEV
⚠ Exploited

Published

August 17, 2023

Last Modified

October 24, 2025

Advisory Details (4)

Auto-updated Jun 1, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-36845
generic

CEC Juniper Community

https://supportportal.juniper.net/JSA72300
generic

Packet Storm

http://packetstormsecurity.com/files/176969/Juniper-SRX-Firewall-EX-Switch-Remote-Code-Execution.html
generic

Packet Storm

http://packetstormsecurity.com/files/174865/Juniper-SRX-Firewall-EX-Switch-Remote-Code-Execution.html

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 59× in last 7d / 229× 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 403 total refreshes for this CVE.

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

Publicly available exploits

(8 references)

Working exploit code is in the public domain (1 Metasploit module) (6 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCak1t4/CVE-2023-36845
    First seen Feb 13, 2024

    CVES

    Open source ↗
  • GitHub PoCAsbawy/Automation-for-Juniper-cve-2023-36845
    First seen Jan 29, 2024

    Simple Automation script for juniper cve-2023-36845

    Open source ↗
  • GitHub PoCcyberh3als/CVE-2023-36845-POC
    First seen Oct 2, 2023

    CVE-2023-36845 PoC script automates the PoC for CVE-2023-36845 targeting Juniper Networks Junos OS's J-Web component on EX and SRX Series devices. It exploits a PHP flaw, allowing remote modification of the PHPRC variable. Successful exploitation can lead to code injection and execution.

    Open source ↗
  • GitHub PoCzaenhaxor/CVE-2023-36845
    First seen Sep 29, 2023

    CVE-2023-36845 - Juniper Firewall Remote code execution (RCE)

    Open source ↗
  • GitHub PoCkljunowsky/CVE-2023-36845
    First seen Sep 26, 2023

    Juniper Firewalls CVE-2023-36845 - RCE

    Open source ↗
  • GitHub PoCvulncheck-oss/cve-2023-36845-scanner
    First seen Sep 16, 2023

    A go-exploit to scan for Juniper firewalls vulnerable to CVE-2023-36845

    Open source ↗
  • Metasploitexploit/freebsd/http/junos_phprc_auto_prepend_file✓ verified
    First seen Aug 17, 2023

    Junos OS PHPRC Environment Variable Manipulation RCE

    Open source ↗
  • Nucleihttp/cves/2023/CVE-2023-36845.yaml
    First seen Jan 1, 2023

    Juniper J-Web - Remote Code Execution

    Open source ↗

Frequently asked(6)

What is CVE-2023-36845?
CVE-2023-36845 is a critical vulnerability published on August 17, 2023. A PHP External Variable Modification vulnerability in J-Web of Juniper Networks Junos OS on EX Series and SRX Series allows an unauthenticated, network-based attacker to remotely execute code. Using a crafted request which sets the variable PHPRC an attacker is able to modify the PHP execution…
When was CVE-2023-36845 disclosed?
CVE-2023-36845 was first published in the National Vulnerability Database on August 17, 2023, with the most recent update on October 24, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-36845 actively exploited?
Yes. CISA added CVE-2023-36845 to the Known Exploited Vulnerabilities catalog on November 13, 2023, affecting Juniper Junos OS. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2023-36845?
CVE-2023-36845 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2023-36845?
CVE-2023-36845 affects Juniper Junos OS. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2023-36845?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-36845, 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

Explore the affected products and dependency analysis for CVE-2023-36845

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