HIGH
An issue was discovered in the chacha20 crate before 0.2.3 for Rust
Published Dec 31, 2020
7.5
HIGHCVSS 3.1
EPSS 1.32%
Description
An issue was discovered in the chacha20 crate before 0.2.3 for Rust. A ChaCha20 counter overflow makes it easier for attackers to determine plaintext.
Affected products
No data.
- < 0.2.3
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
7.5 HIGH NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact None
Availability Impact None
No CVSS v3.0 score for this CVE.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:P/I:N/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.32% 0.01325
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.01325
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 1.32% (0.01325) | 69.94th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.31% (0.01309) | 69.33th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.17% (0.00168) | 54.13th | v3 (v2023.03.01) |
| Sep 16, 2023 | 0.17% (0.00168) | 53.35th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.15% (0.00150) | 49.34th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.42% (0.00416) | 10.04th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.42% (0.00416) | 0.00th | v1 |
Weaknesses (1)
References (4)
- https://github.com/RustCrypto/stream-ciphers/pull/64
- https://github.com/advisories/GHSA-j2r6-2m5c-vgh5 Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2019-25005
- https://rustsec.org/advisories/RUSTSEC-2019-0029.html x_refsource_MISCThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/RustCrypto/stream-ciphers/pull/64 | ||
| https://github.com/advisories/GHSA-j2r6-2m5c-vgh5 | Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2019-25005 | ||
| https://rustsec.org/advisories/RUSTSEC-2019-0029.html | x_refsource_MISCThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Dec 31, 2020
Updated Aug 5, 2024
Reserved Dec 31, 2020
Link CVE-2019-25005
CISA Vulnrichment
GHSA-J2R6-2M5C-VGH5 Updated n/a