CVE-2026-20320

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-19. 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 mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 7.5Exploit: None knownExposed services: Not assessed

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

A vulnerability in the Open Client Interface (OCI) XML Parser of Cisco BroadWorks could allow an unauthenticated, remote attacker to read sensitive configuration information on an affected system. This vulnerability exists because XML entries are improperly parsed due to external entity resolution being allowed by default. An attacker could exploit this vulnerability by sending a crafted XML message to the Open Client Interface – Provisioning (OCI-P) service. A successful exploit could allow the attacker to view sensitive files from the filesystem with the privileges of the Cisco BroadWorks user.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100CISA SSVC

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%
Exploitation1% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.5%
EPSS %ILE
40th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 19, 2026

Last Modified

August 20, 2026

Advisory Details (1)

Auto-updated Aug 19, 2026
No fix on record yet.
generic

Cisco BroadWorks Out-of-Band Blind XML External Entity Injection Vulnerability

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bworks-xxe-uwUd7CEt

Vendor Advisories for CVE-2026-20320(2)

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 19× in last 7d / 98× 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 181 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-20320?
CVE-2026-20320 is a high vulnerability published on August 19, 2026. A vulnerability in the Open Client Interface (OCI) XML Parser of Cisco BroadWorks could allow an unauthenticated, remote attacker to read sensitive configuration information on an affected system. This vulnerability exists because XML entries are improperly parsed due to external entity resolution…
When was CVE-2026-20320 disclosed?
CVE-2026-20320 was first published on August 19, 2026, with the most recent update on August 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-20320 actively exploited?
CVE-2026-20320 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (40th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-20320?
CVE-2026-20320 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-20320?
No fix for CVE-2026-20320 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-20320 are linked in the Vendor Advisories panel on this page.

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