CVE-2026-73573

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 77% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

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

In Zimbra Collaboration (ZCS) before 10.1.17, a path traversal vulnerability exists in the Zimbra Briefcase document editing functionality due to improper validation of the packages parameter. An authenticated attacker can exploit this vulnerability by supplying a crafted path traversal sequence, potentially allowing unauthorized disclosure of sensitive files within the web application directory.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
23%
KEV
Not listed

Published

August 13, 2026

Last Modified

August 28, 2026

Advisory Details (2)

Auto-updated Aug 28, 2026
No patch confirmed yet.
generic

Zimbra Security Advisories - Zimbra :: Tech Center

https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
generic

Zimbra Responsible Disclosure Policy - Zimbra :: Tech Center

https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy

Vendor Advisories for CVE-2026-73573(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 / 72× 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.

  1. 2026-09-19 04:52 UTCEG score recompute
  2. 2026-09-19 04:51 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 04:53 UTCEG score recompute
  5. 2026-09-18 04:53 UTCGHSA enrichment
  6. 2026-09-17 04:58 UTCEG score recompute
  7. 2026-09-17 04:58 UTCGHSA enrichment
  8. 2026-09-16 14:08 UTCEPSS rescore
  9. 2026-09-16 05:15 UTCEPSS rescore
  10. 2026-09-16 05:03 UTCGHSA enrichment
  11. 2026-09-15 04:31 UTCEG score recompute
  12. 2026-09-15 04:31 UTCGHSA enrichment
  13. 2026-09-15 03:12 UTCEPSS rescore
  14. 2026-09-14 04:36 UTCEG score recompute
  15. 2026-09-14 04:36 UTCGHSA enrichment
  16. 2026-09-13 04:41 UTCEG score recompute
  17. 2026-09-13 04:41 UTCGHSA enrichment
  18. 2026-09-12 15:02 UTCEPSS rescore
  19. 2026-09-12 04:44 UTCEG score recompute
  20. 2026-09-12 04:44 UTCGHSA enrichment
  21. 2026-09-11 14:53 UTCEPSS rescore
  22. 2026-09-11 04:48 UTCEG score recompute
  23. 2026-09-11 04:48 UTCGHSA enrichment
  24. 2026-09-10 09:35 UTCEPSS rescore
  25. 2026-09-10 04:53 UTCGHSA enrichment
Show 63 more
  1. 2026-09-09 04:57 UTCEG score recompute
  2. 2026-09-09 04:57 UTCGHSA enrichment
  3. 2026-09-08 22:01 UTCEPSS rescore
  4. 2026-09-08 01:16 UTCEG score recompute
  5. 2026-09-08 01:16 UTCGHSA enrichment
  6. 2026-09-07 01:20 UTCEG score recompute
  7. 2026-09-07 01:20 UTCGHSA enrichment
  8. 2026-09-06 13:48 UTCEPSS rescore
  9. 2026-09-06 00:26 UTCEG score recompute
  10. 2026-09-06 00:26 UTCGHSA enrichment
  11. 2026-09-05 00:30 UTCEG score recompute
  12. 2026-09-05 00:30 UTCGHSA enrichment
  13. 2026-09-04 05:07 UTCEPSS rescore
  14. 2026-09-03 23:09 UTCGHSA enrichment
  15. 2026-09-02 23:11 UTCEG score recompute
  16. 2026-09-02 23:11 UTCGHSA enrichment
  17. 2026-09-02 14:12 UTCEPSS rescore
  18. 2026-09-01 21:46 UTCEG score recompute
  19. 2026-09-01 21:46 UTCGHSA enrichment
  20. 2026-09-01 13:54 UTCEPSS rescore
  21. 2026-09-01 04:40 UTCEPSS rescore
  22. 2026-09-01 04:40 UTCEPSS rescore
  23. 2026-08-31 21:34 UTCEG score recompute
  24. 2026-08-31 21:34 UTCGHSA enrichment
  25. 2026-08-30 19:18 UTCEPSS rescore
  26. 2026-08-30 19:17 UTCEPSS rescore
  27. 2026-08-30 15:07 UTCEG score recompute
  28. 2026-08-30 15:06 UTCGHSA enrichment
  29. 2026-08-30 01:22 UTCEPSS rescore
  30. 2026-08-29 15:09 UTCEG score recompute
  31. 2026-08-29 15:09 UTCGHSA enrichment
  32. 2026-08-28 21:42 UTCEPSS rescore
  33. 2026-08-28 14:07 UTCEG score recompute▲ 3.40
  34. 2026-08-28 14:07 UTCGHSA enrichment
  35. 2026-08-28 14:04 UTCNVD updateCVSS v3 → 6.5 · severity → MEDIUM
  36. 2026-08-27 19:32 UTCEG score recompute
  37. 2026-08-27 19:32 UTCGHSA enrichment
  38. 2026-08-27 14:25 UTCEPSS rescore
  39. 2026-08-26 14:47 UTCEPSS rescore
  40. 2026-08-25 13:49 UTCEPSS rescore
  41. 2026-08-24 17:14 UTCEG score recompute
  42. 2026-08-24 17:14 UTCGHSA enrichment
  43. 2026-08-23 00:19 UTCEPSS rescore
  44. 2026-08-21 23:49 UTCEPSS rescore
  45. 2026-08-21 14:09 UTCEG score recompute
  46. 2026-08-21 14:09 UTCGHSA enrichment
  47. 2026-08-20 22:56 UTCEPSS rescore
  48. 2026-08-19 20:25 UTCEG score recompute
  49. 2026-08-19 20:25 UTCGHSA enrichment
  50. 2026-08-19 17:04 UTCEPSS rescore
  51. 2026-08-18 13:49 UTCEPSS rescore
  52. 2026-08-18 13:49 UTCEPSS rescore
  53. 2026-08-17 13:47 UTCEPSS rescore
  54. 2026-08-16 18:24 UTCEG score recompute
  55. 2026-08-16 18:24 UTCGHSA enrichment
  56. 2026-08-16 14:56 UTCEPSS rescore
  57. 2026-08-16 14:56 UTCEPSS rescore
  58. 2026-08-16 02:15 UTCEPSS rescore
  59. 2026-08-15 01:31 UTCEPSS rescore
  60. 2026-08-13 16:25 UTCEG score recompute
  61. 2026-08-13 16:17 UTCEG score recompute
  62. 2026-08-13 15:32 UTCEG score recompute
  63. 2026-08-13 15:31 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-73573?
CVE-2026-73573 is a medium vulnerability published on August 13, 2026. In Zimbra Collaboration (ZCS) before 10.1.17, a path traversal vulnerability exists in the Zimbra Briefcase document editing functionality due to improper validation of the packages parameter. An authenticated attacker can exploit this vulnerability by supplying a crafted path traversal sequence,…
When was CVE-2026-73573 disclosed?
CVE-2026-73573 was first published in the National Vulnerability Database on August 13, 2026, with the most recent update on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-73573 actively exploited?
CVE-2026-73573 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 77.0% of all scored CVEs.
What is the CVSS score of CVE-2026-73573?
CVE-2026-73573 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-73573?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-73573, 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

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