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CVE-2021-34182

Status: ModifiedCritical (9.8)—
Severity9.8Critical · CVSS 3.1
Exploitation probability0.86 %higher than 58% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

An issue in ttyd v.1.6.3 allows attacker to execute arbitrary code via default configuration permissions.

CVSS

Base score
9.8
Version
3.1
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
0.86 %
Percentile among all scored CVEs
58
Score date
10/20/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Ttyd Project — Ttyd

CWEs

References

Show 2 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2021-34182",
  "cveTags": [],
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          "options": [
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              "automatable": "yes"
            },
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              "technicalImpact": "total"
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          "version": "2.0.3",
          "timestamp": "2025-03-18T16:14:42.422725Z"
        }
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  "lastModified": "2026-06-17T03:55:32.307",
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