HIGH
Exim 4 before 4.94.2 allows an off-by-two Out-of-bounds Write because "-F ''" is mishandled by parse_fix_phrase
Published May 6, 2021
7.8
HIGHCVSS 3.1
EPSS 0.40%
Description
Exim 4 before 4.94.2 allows an off-by-two Out-of-bounds Write because "-F ''" is mishandled by parse_fix_phrase.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
7.8 HIGH NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
No CVSS v3.0 score for this CVE.
7.2 HIGH NVD
AV:L/AC:L/Au:N/C:C/I:C/A:C
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
0.40% 0.00395
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.00395
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.40% (0.00395) | 31.33th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.40% (0.00399) | 31.41th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.10% (0.00100) | 25.33th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00044) | 14.58th | v3 (v2023.03.01) |
| May 25, 2024 | 0.04% (0.00044) | 12.27th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00044) | 10.26th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Jan 6, 2022 | 1.84% (0.01840) | 47.32th | v1 |
| Jan 5, 2022 | 0.42% (0.00416) | 26.65th | v5 (v2026.06.15) |
| May 7, 2021 | 0.42% (0.00416) | 0.00th | v1 |
Weaknesses (1)
References (1)
- https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28016-PFPZA.txt x_refsource_MISCVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28016-PFPZA.txt | x_refsource_MISCVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published May 6, 2021
Updated Aug 4, 2024
Reserved Oct 30, 2020
Link CVE-2020-28016
CISA Vulnrichment
Updated n/a