CVE-2021-34182
An issue in ttyd v.1.6.3 allows attacker to execute arbitrary code via default configuration...
An issue in ttyd v.1.6.3 allows attacker to execute arbitrary code via default configuration permissions.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
An issue in ttyd v.1.6.3 allows attacker to execute arbitrary code via default configuration permissions.
- Record
CVE-2021-34182- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-276
- Updated
- 2026-11-02
CVE List
An issue in ttyd v.1.6.3 allows attacker to execute arbitrary code via default configuration permissions.
- Record
CVE-2021-34182- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-276
- Updated
- 2026-11-02
EUVDEUVD-2021-20844
An issue in ttyd v.1.6.3 allows attacker to execute arbitrary code via default configuration permissions.
- Record
EUVD-2021-20844- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-jcg3-g4m6-7ch5
An issue in ttyd v.1.6.3 allows attacker to execute arbitrary code via default configuration...
An issue in ttyd v.1.6.3 allows attacker to execute arbitrary code via default configuration permissions.
- Record
GHSA-jcg3-g4m6-7ch5- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-276
- Updated
- 2026-11-02
OSV
An issue in ttyd v.1.6.3 allows attacker to execute arbitrary code via default configuration permissions.
- Record
CVE-2021-34182- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2021-34182
An issue in ttyd v.1.6.3 allows attacker to execute arbitrary code via default configuration permissions.
- Record
DEBIAN-CVE-2021-34182- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2021-34182
An issue in ttyd v.1.6.3 allows attacker to execute arbitrary code via default configuration permissions.
- Record
UBUNTU-CVE-2021-34182- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
ttydDebian:14 | before 1.6.3-2, plus listed versions 1.6.3-1 | 1.6.3-2 |
ttydUbuntu:22.04:LTS | All versions, plus listed versions 1.6.3-31.6.3+20210924-11.6.3+20210924-1build1 | None known |
ttydUbuntu:24.04:LTS | All versions, plus listed versions 1.7.3-21.7.4-11.7.4-1build11.7.4-1build2 | None known |
ttydUbuntu:25.10 | All versions, plus listed versions 1.7.7-21.7.7-4 | None known |
ttydUbuntu:26.10 | All versions, plus listed versions 1.7.7-4build11.7.7-4build2 | None known |
ttydUbuntu:26.04:LTS | All versions, plus listed versions 1.7.7-41.7.7-4build1 | None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-34182 is a critical vulnerability (CVSS 9.8) in Ttyd Project Ttyd, published February 17, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.86%, the 59th percentile. Fixed in ttyd 1.6.3-2.