exim: arbitrary code execution via improper DKIM signature matching
Published May 16, 2011
7.5
HIGHCVSS 2.0
EPSS 3.80%
Description
The DKIM implementation in Exim 4.7x before 4.76 permits matching for DKIM identities to apply to lookup items, instead of only strings, which allows remote attackers to execute arbitrary code or access a filesystem via a crafted identity.
Affected products
No data.
No data.
Red Hat Enterprise Linux 4
exim
Not affected
Red Hat Enterprise Linux 5
exim
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | exim | Not affected | n/a |
| 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 4 or 5 as they did not include support for DKIM.
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:L/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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.80% (0.03802) | 89.68th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.80% (0.03802) | 88.59th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.30% (0.01304) | 77.92th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.49% (0.03486) | 79.06th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.13% (0.01133) | 76.86th | v4 (v2025.03.14) |
| Dec 12, 2024 | 6.59% (0.06589) | 94.05th | v3 (v2023.03.01) |
| Feb 23, 2024 | 6.59% (0.06589) | 93.57th | v3 (v2023.03.01) |
| Mar 7, 2023 | 7.16% (0.07164) | 92.92th | 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 (9)
- http://www.debian.org/security/2011/dsa-2236 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/bid/47836 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/USN-1135-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2011-1407 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=705446 Issue Tracking
- https://lists.exim.org/lurker/message/20110509.091632.daed0206.en.html mailing-listx_refsource_MLISTPatch
- https://lists.exim.org/lurker/message/20110512.102909.8136175a.en.html mailing-listx_refsource_MLISTPatch
- https://nvd.nist.gov/vuln/detail/CVE-2011-1407
- https://www.cve.org/CVERecord?id=CVE-2011-1407
| Link | Providers | Tags |
|---|---|---|
| http://www.debian.org/security/2011/dsa-2236 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.securityfocus.com/bid/47836 | vdb-entryx_refsource_BID | |
| http://www.ubuntu.com/usn/USN-1135-1 | vendor-advisoryx_refsource_UBUNTU | |
| https://access.redhat.com/security/cve/CVE-2011-1407 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=705446 | Issue Tracking | |
| https://lists.exim.org/lurker/message/20110509.091632.daed0206.en.html | mailing-listx_refsource_MLISTPatch | |
| https://lists.exim.org/lurker/message/20110512.102909.8136175a.en.html | mailing-listx_refsource_MLISTPatch | |
| https://nvd.nist.gov/vuln/detail/CVE-2011-1407 | ||
| https://www.cve.org/CVERecord?id=CVE-2011-1407 |
Change history (0)
No recorded changes yet.