HIGH
libidn: Out-of-bounds read when reading zero byte as input
Published Sep 7, 2016
7.5
HIGHCVSS 3.0
EPSS 6.51%
Description
idn in libidn before 1.33 might allow remote attackers to obtain sensitive memory information by reading a zero byte as input, which triggers an out-of-bounds read, a different vulnerability than CVE-2015-8948.
Affected products
No data.
Configuration 2
OR
- 12.04
- 14.04
- 16.04
No data.
Red Hat Enterprise Linux 5
libidn
Will not fix
Red Hat Enterprise Linux 6
libidn
Will not fix
Red Hat Enterprise Linux 7
libidn
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | libidn | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | libidn | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | libidn | Will not fix | n/a |
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.
7.5 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact None
Availability Impact None
1 other source (Red Hat) ▾
3.7 LOW Red Hat
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact Low
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:P/I:N/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
6.51% 0.06513
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.06513
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 (19 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 6.51% (0.06513) | 93.57th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.39% (0.06390) | 92.75th | v5 (v2026.06.15) |
| May 13, 2026 | 3.21% (0.03205) | 87.14th | v4 (v2025.03.14) |
| Feb 18, 2026 | 4.75% (0.04748) | 89.19th | v4 (v2025.03.14) |
| Dec 28, 2025 | 6.27% (0.06274) | 90.60th | v4 (v2025.03.14) |
| Dec 27, 2025 | 4.26% (0.04265) | 88.51th | v4 (v2025.03.14) |
| Oct 28, 2025 | 6.27% (0.06274) | 90.50th | v4 (v2025.03.14) |
| Oct 27, 2025 | 4.26% (0.04265) | 88.34th | v4 (v2025.03.14) |
| Oct 1, 2025 | 6.27% (0.06274) | 90.59th | v4 (v2025.03.14) |
| Sep 16, 2025 | 4.26% (0.04265) | 88.37th | v4 (v2025.03.14) |
| Mar 30, 2025 | 2.29% (0.02287) | 83.23th | v4 (v2025.03.14) |
| Mar 29, 2025 | 5.21% (0.05209) | 82.84th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.29% (0.02287) | 83.54th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.29% (0.00289) | 69.81th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.29% (0.00289) | 68.08th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.29% (0.00289) | 64.03th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.73th | v2 (v2022.01.01) |
Weaknesses (1)
References (14)
- http://git.savannah.gnu.org/cgit/libidn.git/commit/?id=5e3cb9c7b5bf0ce665b9d68f5ddf095af5c9ba60 x_refsource_CONFIRMIssue TrackingPatch
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00005.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00098.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/07/20/6 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/07/21/4 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/92070 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/USN-3068-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2016-6262 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1359138 Issue Tracking
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.gnu.org/archive/html/help-libidn/2016-07/msg00009.html mailing-listx_refsource_MLISTVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2016-6262
- https://www.cve.org/CVERecord?id=CVE-2016-6262
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Sep 7, 2016
Updated Aug 6, 2024
Reserved Jul 21, 2016
Link CVE-2016-6262
CISA Vulnrichment
Updated n/a