CVE-2026-63077

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2026-08-05), indicating real-world exploitation has been confirmed by US federal agencies. a secondary CVSS source baseline 9.8 retained for reference (NVD's own analysis pending). Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, secondary
Trending — 4 sources updated this weekExploited in the wild
9.8EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 87%CVSS: 9.8Exploit: cisa kev · ssvc active · Metasploit · epss top5pct · epss high · public exploitExposed: 0

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

In JetBrains TeamCity before 2026.1.3, 2025.11.7 unauthenticated remote code execution was possible via the agent polling protocol

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
99(Act)
EG Risk 99/100SSVC: Act

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
Severity98% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Fix now — active exploitation, automatable, high impact.
EPSS PROB
87%
EPSS %ILE
100%
KEV
⚠ Exploited

Published

July 27, 2026

Last Modified

August 6, 2026

Advisory Details (2)

Auto-updated Sep 17, 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-2026-63077
generic

Fixed security issues

https://www.jetbrains.com/privacy-security/issues-fixed/

Vendor Advisories for CVE-2026-63077(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 46× in last 7d / 204× 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 422 total refreshes for this CVE.

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

Publicly available exploits

(3 references)

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

  • GitHub PoCsfewer-r7/CVE-2026-63077
    First seen Aug 7, 2026

    Unauthenticated Remote Code Execution in JetBrains TeamCity (CVE-2026-63077)

    Open source ↗
  • Metasploitexploit/multi/http/jetbrains_teamcity_rce_cve_2026_63077✓ verified
    First seen Jul 27, 2026

    JetBrains TeamCity Agent Polling Unauthenticated Remote Code Execution

    Open source ↗
  • Nucleihttp/cves/2026/CVE-2026-63077.yaml
    First seen Jan 1, 2026

    JetBrains TeamCity < 2026.1.3, 2025.11.7 - Remote Code Execution

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2026-63077?
CVE-2026-63077 is a critical vulnerability published on July 27, 2026. In JetBrains TeamCity before 2026.1.3, 2025.11.7 unauthenticated remote code execution was possible via the agent polling protocol
When was CVE-2026-63077 disclosed?
CVE-2026-63077 was first published in the National Vulnerability Database on July 27, 2026, with the most recent update on August 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-63077 actively exploited?
Yes. CISA added CVE-2026-63077 to the Known Exploited Vulnerabilities catalog on August 5, 2026, affecting JetBrains TeamCity. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2026-63077?
CVE-2026-63077 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2026-63077?
CVE-2026-63077 affects JetBrains TeamCity. 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-2026-63077?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-63077, 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-2026-63077

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