CVE-2025-68645

HIGHNVD 8.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2026-01-22), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.8 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
8.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 32%CVSS: 8.8Exploit: NoneExposed: 0

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

A Local File Inclusion (LFI) vulnerability exists in the Webmail Classic UI of Zimbra Collaboration (ZCS) 10.0 and 10.1 because of improper handling of user-supplied request parameters in the RestFilter servlet. An unauthenticated remote attacker can craft requests to the /h/rest endpoint to influence internal request dispatching, allowing inclusion of arbitrary files from the WebRoot directory.

CVSS v3
8.8
EG Score
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

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
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS
98.1%
KEV
⚠ Exploited

Published

December 22, 2025

Last Modified

January 23, 2026

Advisory Details (3)

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-2025-68645
generic

Zimbra Responsible Disclosure Policy - Zimbra :: Tech Center

https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy
generic🔴 Active Exploitation

Security Center - Zimbra :: Tech Center

https://wiki.zimbra.com/wiki/Security_Center

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 50× in last 7d / 235× 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 446 total refreshes for this CVE.

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

Publicly available exploits

(5 references)

Working exploit code is in the public domain (4 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoC0xBlackash/CVE-2025-68645
    First seen Apr 24, 2026

    CVE-2025-68645

    Open source ↗
  • GitHub PoCMaxMnMl/zimbramail-CVE-2025-68645-poc
    First seen Jan 1, 2026

    CVE-2025-68645 - A Local File Inclusion (LFI) vulnerability in the Webmail Classic UI of Zimbra Collaboration

    Open source ↗
  • GitHub PoCchinaxploiter/CVE-2025-68645-PoC
    First seen Dec 30, 2025

    Academic proof-of-concept demonstrating CVE-2025-68645 for authorized security research.

    Open source ↗
  • GitHub PoCcodeb0ssx/CVE-2025-68645-PoC
    First seen Dec 30, 2025

    Academic proof-of-concept demonstrating CVE-2025-68645 for authorized security research.

    Open source ↗
  • Nucleihttp/cves/2025/CVE-2025-68645.yaml
    First seen Jan 1, 2025

    Zimbra Collaboration - Local File Inclusion

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2025-68645?
CVE-2025-68645 is a high vulnerability published on December 22, 2025. A Local File Inclusion (LFI) vulnerability exists in the Webmail Classic UI of Zimbra Collaboration (ZCS) 10.0 and 10.1 because of improper handling of user-supplied request parameters in the RestFilter servlet. An unauthenticated remote attacker can craft requests to the /h/rest endpoint to…
When was CVE-2025-68645 disclosed?
CVE-2025-68645 was first published in the National Vulnerability Database on December 22, 2025, with the most recent update on January 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-68645 actively exploited?
Yes. CISA added CVE-2025-68645 to the Known Exploited Vulnerabilities catalog on January 22, 2026, affecting Synacor Zimbra Collaboration Suite (ZCS). KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2025-68645?
CVE-2025-68645 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2025-68645?
CVE-2025-68645 affects Synacor Zimbra Collaboration Suite (ZCS). 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-2025-68645?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-68645, 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-2025-68645

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