CRITICAL
Format string vulnerability in Dropbear SSH before 2016.74 allows remote attackers to execute arbitrary code via format string specifiers in the (1) username or (2) host argument
Published Mar 3, 2017
9.8
CRITICALCVSS 3.0
EPSS 10.22%
Description
Format string vulnerability in Dropbear SSH before 2016.74 allows remote attackers to execute arbitrary code via format string specifiers in the (1) username or (2) host argument.
Affected products
No data.
- ≤ 2016.73
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.
No CVSS v3.1 score for this CVE.
9.8 CRITICAL NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
10.0 HIGH NVD
AV:N/AC:L/Au:N/C:C/I:C/A:C
Access Vector Network
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.
10.22% 0.10217
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.10217
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 (51 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 10.22% (0.10217) | 95.54th | v5 (v2026.06.15) |
| Jun 15, 2026 | 10.49% (0.10494) | 95.16th | v5 (v2026.06.15) |
| Mar 4, 2026 | 25.33% (0.25332) | 96.09th | v4 (v2025.03.14) |
| Mar 1, 2026 | 21.17% (0.21174) | 95.58th | v4 (v2025.03.14) |
| Feb 4, 2026 | 25.33% (0.25332) | 96.06th | v4 (v2025.03.14) |
| Feb 1, 2026 | 21.17% (0.21174) | 95.54th | v4 (v2025.03.14) |
| Jan 15, 2026 | 25.33% (0.25332) | 96.02th | v4 (v2025.03.14) |
| Jan 4, 2026 | 20.27% (0.20265) | 95.31th | v4 (v2025.03.14) |
| Jan 1, 2026 | 16.93% (0.16928) | 94.80th | v4 (v2025.03.14) |
| Dec 28, 2025 | 20.27% (0.20265) | 95.32th | v4 (v2025.03.14) |
| Dec 4, 2025 | 9.42% (0.09419) | 92.49th | v4 (v2025.03.14) |
| Dec 1, 2025 | 7.65% (0.07650) | 91.58th | v4 (v2025.03.14) |
| Nov 18, 2025 | 9.42% (0.09419) | 91.97th | v4 (v2025.03.14) |
| Nov 5, 2025 | 12.27% (0.12268) | 93.55th | v4 (v2025.03.14) |
| Nov 1, 2025 | 4.77% (0.04767) | 89.00th | v4 (v2025.03.14) |
| Oct 4, 2025 | 5.92% (0.05925) | 90.23th | v4 (v2025.03.14) |
| Oct 1, 2025 | 4.77% (0.04767) | 89.04th | v4 (v2025.03.14) |
| Sep 30, 2025 | 14.45% (0.14447) | 94.22th | v4 (v2025.03.14) |
| Sep 7, 2025 | 10.35% (0.10350) | 92.91th | v4 (v2025.03.14) |
| Sep 1, 2025 | 8.15% (0.08147) | 91.89th | v4 (v2025.03.14) |
| Aug 4, 2025 | 10.35% (0.10350) | 92.88th | v4 (v2025.03.14) |
| Aug 1, 2025 | 8.15% (0.08147) | 91.87th | v4 (v2025.03.14) |
| Jul 4, 2025 | 10.35% (0.10350) | 92.85th | v4 (v2025.03.14) |
| Jul 1, 2025 | 8.15% (0.08147) | 91.79th | v4 (v2025.03.14) |
| Jun 4, 2025 | 10.35% (0.10350) | 92.78th | v4 (v2025.03.14) |
| Jun 1, 2025 | 8.15% (0.08147) | 91.75th | v4 (v2025.03.14) |
| May 5, 2025 | 10.35% (0.10350) | 92.75th | v4 (v2025.03.14) |
| May 1, 2025 | 8.15% (0.08147) | 91.74th | v4 (v2025.03.14) |
| Apr 18, 2025 | 10.35% (0.10350) | 92.73th | v4 (v2025.03.14) |
| Apr 17, 2025 | 8.15% (0.08147) | 91.68th | v4 (v2025.03.14) |
| Apr 11, 2025 | 10.35% (0.10350) | 92.49th | v4 (v2025.03.14) |
| Apr 10, 2025 | 8.15% (0.08147) | 91.40th | v4 (v2025.03.14) |
| Apr 8, 2025 | 10.35% (0.10350) | 92.48th | v4 (v2025.03.14) |
| Apr 7, 2025 | 8.15% (0.08147) | 91.40th | v4 (v2025.03.14) |
| Apr 4, 2025 | 10.35% (0.10350) | 92.50th | v4 (v2025.03.14) |
| Apr 3, 2025 | 8.15% (0.08147) | 91.40th | v4 (v2025.03.14) |
| Mar 30, 2025 | 10.35% (0.10350) | 92.47th | v4 (v2025.03.14) |
| Mar 29, 2025 | 21.68% (0.21679) | 93.05th | v4 (v2025.03.14) |
| Mar 28, 2025 | 8.15% (0.08147) | 91.37th | v4 (v2025.03.14) |
| Mar 26, 2025 | 10.35% (0.10350) | 92.39th | v4 (v2025.03.14) |
| Mar 25, 2025 | 8.15% (0.08147) | 91.32th | v4 (v2025.03.14) |
| Mar 23, 2025 | 10.35% (0.10350) | 92.05th | v4 (v2025.03.14) |
| Mar 22, 2025 | 8.15% (0.08147) | 91.47th | v4 (v2025.03.14) |
| Mar 19, 2025 | 10.35% (0.10350) | 92.22th | v4 (v2025.03.14) |
| Mar 17, 2025 | 11.45% (0.11454) | 93.04th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.91% (0.02911) | 91.16th | v3 (v2023.03.01) |
| May 8, 2023 | 2.91% (0.02911) | 89.27th | v3 (v2023.03.01) |
| Mar 7, 2023 | 3.64% (0.03637) | 90.25th | v3 (v2023.03.01) |
| Mar 6, 2023 | 5.79% (0.05785) | 90.41th | v2 (v2022.01.01) |
| Apr 1, 2022 | 5.79% (0.05785) | 89.45th | v2 (v2022.01.01) |
| Feb 4, 2022 | 5.79% (0.05785) | 77.27th | v2 (v2022.01.01) |
Weaknesses (1)
References (6)
- http://seclists.org/fulldisclosure/2024/Aug/35
- http://www.openwall.com/lists/oss-security/2016/09/15/2 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/92974 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1376353 x_refsource_CONFIRMIssue Tracking
- https://secure.ucc.asn.au/hg/dropbear/rev/b66a483f3dcb x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://security.gentoo.org/glsa/201702-23 vendor-advisoryx_refsource_GENTOOPatchThird Party AdvisoryVDB Entry
| Link | Providers | Tags |
|---|---|---|
| http://seclists.org/fulldisclosure/2024/Aug/35 | ||
| http://www.openwall.com/lists/oss-security/2016/09/15/2 | mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory | |
| http://www.securityfocus.com/bid/92974 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1376353 | x_refsource_CONFIRMIssue Tracking | |
| https://secure.ucc.asn.au/hg/dropbear/rev/b66a483f3dcb | x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory | |
| https://security.gentoo.org/glsa/201702-23 | vendor-advisoryx_refsource_GENTOOPatchThird Party AdvisoryVDB Entry |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Mar 3, 2017
Updated Nov 4, 2025
Reserved Sep 9, 2016
Link CVE-2016-7406
CISA Vulnrichment
Updated n/a