CVE-2022-48521
An issue was discovered in OpenDKIM through 2.10.3, and 2.11.x through 2.11.0-Beta2. It fails to...
An issue was discovered in OpenDKIM through 2.10.3, and 2.11.x through 2.11.0-Beta2. It fails to keep track of ordinal numbers when removing fake Authentication-Results header fields, which allows a remote attacker to craft an e-mail message with a fake sender address such that programs that rely on Authentication-Results from OpenDKIM will treat the message as having a valid DKIM signature when in fact it has none.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
5.3
An issue was discovered in OpenDKIM through 2.10.3, and 2.11.x through 2.11.0-Beta2. It fails to keep track of ordinal numbers when removing fake Authentication-Results header fields, which allows a remote attacker to craft an e-mail message with a fake sender address such that programs that rely on Authentication-Results from OpenDKIM will treat the message as having a valid DKIM signature when in fact it has none.
- Record
CVE-2022-48521- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Updated
- 2026-11-02
CVE List No score
An issue was discovered in OpenDKIM through 2.10.3, and 2.11.x through 2.11.0-Beta2. It fails to keep track of ordinal numbers when removing fake Authentication-Results header fields, which allows a remote attacker to craft an e-mail message with a fake sender address such that programs that rely on Authentication-Results from OpenDKIM will treat the message as having a valid DKIM signature when in fact it has none.
- Record
CVE-2022-48521- Updated
- 2026-11-02
EUVDEUVD-2022-51217 No score
An issue was discovered in OpenDKIM through 2.10.3, and 2.11.x through 2.11.0-Beta2. It fails to keep track of ordinal numbers when removing fake Authentication-Results header fields, which allows a remote attacker to craft an e-mail message with a fake sender address such that programs that rely on Authentication-Results from OpenDKIM will treat the message as having a valid DKIM signature when in fact it has none.
- Record
EUVD-2022-51217- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-3q5m-9r3g-pqfj
5.3
An issue was discovered in OpenDKIM through 2.10.3, and 2.11.x through 2.11.0-Beta2. It fails to...
An issue was discovered in OpenDKIM through 2.10.3, and 2.11.x through 2.11.0-Beta2. It fails to keep track of ordinal numbers when removing fake Authentication-Results header fields, which allows a remote attacker to craft an e-mail message with a fake sender address such that programs that rely on Authentication-Results from OpenDKIM will treat the message as having a valid DKIM signature when in fact it has none.
- Record
GHSA-3q5m-9r3g-pqfj- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Updated
- 2026-11-02
OSVDEBIAN-CVE-2022-48521
5.3
An issue was discovered in OpenDKIM through 2.10.3, and 2.11.x through 2.11.0-Beta2. It fails to keep track of ordinal numbers when removing fake Authentication-Results header fields, which allows a remote attacker to craft an e-mail message with a fake sender address such that programs that rely on Authentication-Results from OpenDKIM will treat the message as having a valid DKIM signature when in fact it has none.
- Record
DEBIAN-CVE-2022-48521- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Updated
- 2026-11-03
OSVUBUNTU-CVE-2022-48521
5.3
An issue was discovered in OpenDKIM through 2.10.3, and 2.11.x through 2.11.0-Beta2. It fails to keep track of ordinal numbers when removing fake Authentication-Results header fields, which allows a remote attacker to craft an e-mail message with a fake sender address such that programs that rely on Authentication-Results from OpenDKIM will treat the message as having a valid DKIM signature when in fact it has none.
- Record
UBUNTU-CVE-2022-48521- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Updated
- 2026-11-02
OSV No score
An issue was discovered in OpenDKIM through 2.10.3, and 2.11.x through 2.11.0-Beta2. It fails to keep track of ordinal numbers when removing fake Authentication-Results header fields, which allows a remote attacker to craft an e-mail message with a fake sender address such that programs that rely on Authentication-Results from OpenDKIM will treat the message as having a valid DKIM signature when in fact it has none.
- Record
CVE-2022-48521- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
opendkimDebian:12 |
before 2.11.0~beta2-8+deb12u1, plus listed versions 2.11.0~beta2-8 |
2.11.0~beta2-8+deb12u1 |
opendkimDebian:13 |
before 2.11.0~beta2-9 | 2.11.0~beta2-9 |
opendkimDebian:14 |
before 2.11.0~beta2-9 | 2.11.0~beta2-9 |
opendkimDebian:10 |
before 2.11.0~alpha-12+deb10u1, plus listed versions 2.11.0~alpha-12 |
2.11.0~alpha-12+deb10u1 |
opendkimUbuntu:16.04:LTS |
All versions, plus listed versions 2.10.3-3build1 |
None known |
opendkimUbuntu:18.04:LTS |
All versions, plus listed versions 2.11.0~alpha-102.11.0~alpha-112.11.0~alpha-11build1 |
None known |
opendkimUbuntu:20.04:LTS |
All versions, plus listed versions 2.11.0~alpha-122.11.0~alpha-132.11.0~alpha-142.11.0~beta2-1 |
None known |
opendkimUbuntu:22.04:LTS |
All versions, plus listed versions 2.11.0~beta2-4build12.11.0~beta2-52.11.0~beta2-6 |
None known |
opendkimUbuntu:24.04:LTS |
All versions, plus listed versions 2.11.0~beta2-82.11.0~beta2-92.11.0~beta2-9build32.11.0~beta2-9build4 |
None known |
opendkimUbuntu:25.10 |
All versions, plus listed versions 2.11.0~beta2-9.12.11.0~beta2-9.2 |
None known |
opendkimUbuntu:26.10 |
All versions, plus listed versions 2.11.0~beta2-9.2build12.11.0~beta2-9.2build2 |
None known |
opendkimUbuntu:26.04:LTS |
All versions, plus listed versions 2.11.0~beta2-9.22.11.0~beta2-9.2build1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2022-48521 is a medium vulnerability (CVSS 5.3) in Opendkim, published July 11, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.74%, the 55th percentile. Fixed in opendkim 2.11.0~beta2-8+deb12u1.
References
github.com/trusteddomainproject/OpenDKIM/issues/148
lists.debian.org/debian-lts-announce/2023/12/msg00002.html
nvd.nist.gov/vuln/detail/CVE-2022-48521
github.com/advisories/GHSA-3q5m-9r3g-pqfj
github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48521.json
security-tracker.debian.org/tracker/CVE-2022-48521
ubuntu.com/security/CVE-2022-48521
cve.org/CVERecord?id=CVE-2022-48521