Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV N H N N U H H N 7.4 .2228 97.7 —
AFFECTED Product Versions Fixed n/a n/a – —
TIMELINE Jun 3 Reserved by mitre Jun 4 Published (CNA: mitre) Oct 14 ENRICHED — CVE-2020-13777. Received CVSS 7.4 and CPE data from NVD.
GnuTLS 3.6.x before 3.6.14 uses incorrect cryptography for encrypting a session ticket (a loss of confidentiality in TLS 1.2, and an authentication bypass in TLS 1.3). The earliest affected version is 3.6.4 (2018-09-24) because of an error in a 2018-09-18 commit. Until the first key rotation, the TLS server always uses wrong data in place of an encryption key derived from an application.
| Date | Event | Detail |
|---|---|---|
| June 3, 2020 | Reserved | Reserved by mitre |
| June 4, 2020 | Published | Published (CNA: mitre) |
| October 14, 2026 | ENRICHED | ENRICHED — CVE-2020-13777. Received CVSS 7.4 and CPE data from NVD. |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| n/a | n/a | — | n/a | — |
Authoritative record: CVE-2020-13777 at cve.org
Weaknesses: CWE-327
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2020-13777 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
