Page generated: 08 Nov 2026, 10:19 UTC
← Dashboard

CVE-2026-63077

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

CVSS 9.8 (CRITICAL) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.9/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 9.8: +1.47
  • Fresh EPSS: 94.89%: +0.47

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 24 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

https://tech-insider.org/
Press · 05 Oct 2026, 07:00 · Ransomware Hits JetBrains TeamCity Flaw, 9.8 CVSS [2026] - https://tech-insider.org/
SC Media
Press · 24 Sep 2026, 07:00 · Critical 9.8 JetBrains TeamCity RCE exploited by ransomware, says CISA - SC Media
BleepingComputer
Press · 24 Sep 2026, 07:00 · CISA: Ransomware gangs now exploiting critical TeamCity flaw - BleepingComputer
shattered.io
Press · 15 Sep 2026, 08:18 · JetBrains Cadence Breach: CVSS 9.8 Bug Open 16 Days [2026] - shattered.io
Rescana
Press · 06 Sep 2026, 07:00 · JetBrains Cadence Breach: Attackers Exploit Unpatched TeamCity CVE-2026-63077 to Exfiltrate AWS Credentials and Source Code - Rescana
See all 24 source documents
The Hacker News
Press · 05 Sep 2026, 07:00 · Attackers Breached JetBrains Cadence via Unpatched TeamCity, Extracting AWS Credentials - The Hacker News
shattered.io
Press · 01 Sep 2026, 07:00 · TeamCity CVE-2026-63077: Ransomware Exploits Flaw - shattered.io
iTnews
Press · 25 Aug 2026, 07:00 · ASD warns Australian TeamCity servers under attack - iTnews
Infosecurity Magazine
Press · 25 Aug 2026, 07:00 · Australia Warns of Active Exploitation of Critical TeamCity Server Flaw - Infosecurity Magazine
https://tech-insider.org/
Press · 13 Aug 2026, 07:00 · TeamCity Vulnerability CVE-2026-63077: CVSS 9.8 RCE [2026] - https://tech-insider.org/
Rapid7
Press · 07 Aug 2026, 07:00 · Rapid7 Analysis of CVE-2026-63077, an unauthenticated Remote Code Execution vulnerability in JetBrains TeamCity - Rapid7
Security Affairs
Press · 06 Aug 2026, 07:00 · U.S. CISA adds a JetBrains TeamCity flaw to its Known Exploited Vulnerabilities catalog - Security Affairs
SecurityWeek
Press · 06 Aug 2026, 07:00 · Hackers Start Exploiting Recent JetBrains TeamCity Vulnerability - SecurityWeek
CyberSecurityNews
Press · 06 Aug 2026, 07:00 · CISA Warns of TeamCity RCE Vulnerability Actively Exploited in Attacks - CyberSecurityNews
The Hacker News
Press · 06 Aug 2026, 07:00 · CISA Flags TeamCity CVE-2026-63077 RCE Flaw Under Active Exploitation in the Wild - The Hacker News
GBHackers News
Press · 31 Jul 2026, 07:00 · Critical JetBrains TeamCity Flaw Enables Unauthenticated Remote Code Execution - GBHackers News
SecurityWeek
Press · 31 Jul 2026, 07:00 · Critical Code Execution Vulnerability Patched in TeamCity - SecurityWeek
BleepingComputer
Press · 30 Jul 2026, 07:00 · JetBrains warns of critical TeamCity remote code execution flaw - BleepingComputer
SC Media
Press · 29 Jul 2026, 07:00 · JetBrains patches critical TeamCity flaw enabling unauthenticated code execution - SC Media
Rapid7
Press · 29 Jul 2026, 07:00 · CVE-2026-63077: Critical unauthenticated remote code execution in JetBrains TeamCity - Rapid7
Rescana
Press · 29 Jul 2026, 07:00 · Critical CVE-2026-63077: Unauthenticated Remote Code Execution Vulnerability in JetBrains TeamCity On-Premises - Rescana
The Hacker News
Press · 28 Jul 2026, 07:00 · Critical TeamCity Flaw Could Let Attackers Run OS Commands Without Logging In - The Hacker News
Help Net Security
Press · 28 Jul 2026, 07:00 · JetBrains fixes critical unauthenticated RCE in TeamCity On-Premises (CVE-2026-63077) - Help Net Security
TechRepublic
Press · 28 Jul 2026, 07:00 · Critical TeamCity Flaw Could Let Unauthenticated Attackers Execute Server Commands - TechRepublic

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

024681002 Nov 2026 · OBSERVED EXPLOITATION + LOWER RECENT ATTENTIONHype 1.1Reality 8.905 Nov 2026 · OBSERVED EXPLOITATION + LOWER RECENT ATTENTIONHype 0.0Reality 8.9Nov 2Nov 5

━ Hype Score (Perceived)  ━ Reality threat priority. Definition changes are not new attacks.

Public exploit evidence

1

Public exploit entries / repo candidates

See 1 repos with metrics
RepositoryStarsForksLanguageUpdated
basesixtythree/B63-POC-CVE-2026-6307700Python22 Oct 2026, 13:48
Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 9.8; EPSS 94.9%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
network access, no prior privileges, no user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 14:00:18.726279+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
Published
27 Jul 2026, 16:44
First press mention
28 Jul 2026, 07:00
Added to the CISA KEV catalog
05 Aug 2026, 00:00
Latest press mention
05 Oct 2026, 07:00
Score calculated
05 Nov 2026, 14:00
PoCs on GitHub
1 repositories