CVE-2026-18279

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-20. A secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 8.8Exploit: None knownExposed services: Not assessed

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

Sony XAV-9500ES RTSP SETUP Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Sony XAV-9500ES devices. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the handling of SETUP RTSP packets. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length buffer. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-29042.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
40
EG Risk 40/100CISA 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
Severity88% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* 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, and watch the vendor's advisory for the fix.
EPSS PROB
0.7%
EPSS %ILE
50th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* 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, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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 20, 2026

Last Modified

August 31, 2026

Advisory Details (1)

Auto-updated Aug 20, 2026
No patch confirmed yet.
generic

ZDI-26-472 - TrendAI™ Zero Day Initiative™ (ZDI)

https://www.zerodayinitiative.com/advisories/ZDI-26-472/

Vendor Advisories for CVE-2026-18279(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 27× in last 7d / 106× 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 171 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-18279?
CVE-2026-18279 is a high vulnerability published on August 20, 2026. Sony XAV-9500ES RTSP SETUP Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Sony XAV-9500ES devices. Authentication is not required to exploit this vulnerability. The specific flaw exists…
When was CVE-2026-18279 disclosed?
CVE-2026-18279 was first published on August 20, 2026, with the most recent update on August 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18279 actively exploited?
CVE-2026-18279 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (50th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-18279?
CVE-2026-18279 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-18279?
No fix for CVE-2026-18279 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-2026-18279 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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