CVE-2019-20786
9.8
CRITICAL · CVSS 3.1 · EPSS 3% (pctl 87)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
Description
handleIncomingPacket in conn.go in Pion DTLS before 1.5.2 lacks a check for application data with epoch 0, which allows remote attackers to inject arbitrary unencrypted data after handshake completion.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 3.01% — more likely to be exploited than 87% of all CVEs |
| Weakness | CWE-287 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2020-04-19 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| pion | dtls |
References
- https://github.com/pion/dtls/commit/fd73a5df2ff0e1fb6ae6a51e2777d7a16cc4f4e0
- https://github.com/pion/dtls/compare/v1.5.1...v1.5.2
- https://www.usenix.org/conference/usenixsecurity20/presentation/fiterau-brostean
- https://www.usenix.org/system/files/sec20fall_fiterau-brostean_prepub.pdf
- https://github.com/pion/dtls/commit/fd73a5df2ff0e1fb6ae6a51e2777d7a16cc4f4e0
- https://github.com/pion/dtls/compare/v1.5.1...v1.5.2
- https://www.usenix.org/conference/usenixsecurity20/presentation/fiterau-brostean
- https://www.usenix.org/system/files/sec20fall_fiterau-brostean_prepub.pdf
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