exim: remote arbitrary code execution via DMARC code parsing
Published Sep 4, 2014
6.8
MEDIUMCVSS 2.0
EPSS 5.29%
Description
The dmarc_process function in dmarc.c in Exim before 4.82.1, when EXPERIMENTAL_DMARC is enabled, allows remote attackers to execute arbitrary code via the From header in an email, which is passed to the expand_string function.
Affected products
No data.
- ≤ 4.82
- 4.00
- 4.01
- 4.02
- 4.03
- 4.04
- 4.05
- 4.10
- 4.11
- 4.12
- 4.14
- 4.20
- 4.21
- 4.22
- 4.23
- 4.24
- 4.30
- 4.31
- 4.32
- 4.33
- 4.34
- 4.40
- 4.41
- 4.42
- 4.43
- 4.44
- 4.50
- 4.51
- 4.52
- 4.53
- 4.54
- 4.60
- 4.61
- 4.62
- 4.63
- 4.64
- 4.65
- 4.66
- 4.67
- 4.68
- 4.69
- 4.70
- 4.71
- 4.72
- 4.73
- 4.74
- 4.75
- 4.76
- 4.77
- 4.80
- 4.80.1
No data.
Red Hat Enterprise Linux 5
exim
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | exim | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the versions of Exim as shipped with Red Hat Enterprise Linux 5 as they did not include the experimental DMARC support.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.29% (0.05285) | 92.32th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.26% (0.05261) | 91.46th | v5 (v2026.06.15) |
| Mar 30, 2025 | 2.18% (0.02176) | 82.84th | v4 (v2025.03.14) |
| Mar 29, 2025 | 5.82% (0.05819) | 83.79th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.18% (0.02176) | 83.19th | v4 (v2025.03.14) |
| Dec 17, 2024 | 3.19% (0.03193) | 90.96th | v3 (v2023.03.01) |
| Mar 7, 2023 | 5.57% (0.05572) | 92.04th | v3 (v2023.03.01) |
| Mar 6, 2023 | 6.52% (0.06523) | 91.37th | v2 (v2022.01.01) |
| Apr 1, 2022 | 6.52% (0.06523) | 90.53th | v2 (v2022.01.01) |
| Feb 4, 2022 | 6.52% (0.06523) | 78.43th | v2 (v2022.01.01) |
References (7)
- http://git.exim.org/exim.git/commitdiff/5b7a7c051c9ab9ee7c924a611f90ef2be03e0ad0 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2021/05/04/7 mailing-listx_refsource_MLIST
- https://access.redhat.com/security/cve/CVE-2014-2957 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1101725 Issue Tracking
- https://lists.exim.org/lurker/message/20140528.122536.a31d60a4.en.html mailing-listx_refsource_MLISTPatchVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2014-2957
- https://www.cve.org/CVERecord?id=CVE-2014-2957
| Link | Providers | Tags |
|---|---|---|
| http://git.exim.org/exim.git/commitdiff/5b7a7c051c9ab9ee7c924a611f90ef2be03e0ad0 | x_refsource_CONFIRM | |
| http://www.openwall.com/lists/oss-security/2021/05/04/7 | mailing-listx_refsource_MLIST | |
| https://access.redhat.com/security/cve/CVE-2014-2957 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1101725 | Issue Tracking | |
| https://lists.exim.org/lurker/message/20140528.122536.a31d60a4.en.html | mailing-listx_refsource_MLISTPatchVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2014-2957 | ||
| https://www.cve.org/CVERecord?id=CVE-2014-2957 |
Change history (0)
No recorded changes yet.