MEDIUM
wireshark: Zlib decompression crash (wnpa-sec-2015-40)
Published Jan 4, 2016
5.5
MEDIUMCVSS 3.0
EPSS 1.70%
Description
Buffer overflow in the tvb_uncompress function in epan/tvbuff_zlib.c in Wireshark 1.12.x before 1.12.9 and 2.0.x before 2.0.1 allows remote attackers to cause a denial of service (application crash) via a crafted packet with zlib compression.
Affected products
No data.
OR
- 1.12.0
- 1.12.1
- 1.12.2
- 1.12.3
- 1.12.4
- 1.12.5
- 1.12.6
- 1.12.7
- 1.12.8
No data.
Red Hat Enterprise Linux 5
wireshark
Will not fix
Red Hat Enterprise Linux 6
wireshark
Will not fix
Red Hat Enterprise Linux 7
wireshark
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | wireshark | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | wireshark | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | wireshark | 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.
5.5 MEDIUM NVD
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
4.3 MEDIUM NVD
AV:N/AC:M/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.70% 0.01701
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.01701
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 (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 1.70% (0.01701) | 76.41th | v5 (v2026.06.15) |
| Sep 22, 2026 | 1.70% (0.01701) | 76.21th | v5 (v2026.06.15) |
| Sep 21, 2026 | 2.85% (0.02853) | 86.04th | v5 (v2026.06.15) |
| Sep 6, 2026 | 1.70% (0.01701) | 75.70th | v5 (v2026.06.15) |
| Sep 5, 2026 | 2.85% (0.02853) | 85.74th | v5 (v2026.06.15) |
| Aug 30, 2026 | 1.70% (0.01701) | 75.58th | v5 (v2026.06.15) |
| Aug 28, 2026 | 2.85% (0.02853) | 85.66th | v5 (v2026.06.15) |
| Aug 24, 2026 | 1.70% (0.01701) | 75.44th | v5 (v2026.06.15) |
| Aug 23, 2026 | 2.85% (0.02853) | 85.60th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.70% (0.01701) | 74.16th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.14% (0.00141) | 31.63th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.27% (0.00267) | 68.53th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.27% (0.00267) | 66.74th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.27% (0.00267) | 62.46th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.41% (0.01408) | 72.89th | v2 (v2022.01.01) |
| Mar 2, 2023 | 1.41% (0.01408) | 72.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.41% (0.01408) | 70.87th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.41% (0.01408) | 49.94th | v2 (v2022.01.01) |
Weaknesses (2)
References (13)
- http://www.debian.org/security/2016/dsa-3505 vendor-advisoryx_refsource_DEBIAN
- http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/79814 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1034551 vdb-entryx_refsource_SECTRACK
- http://www.wireshark.org/security/wnpa-sec-2015-40.html x_refsource_CONFIRMVendor Advisory
- https://access.redhat.com/security/cve/CVE-2015-8721 Vendor Advisory
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=11548 x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=1296065 Issue Tracking
- https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=cec0593ae6c3bca65eff65741c2a10f3de3e0afe x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2015-8721
- https://security.gentoo.org/glsa/201604-05 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2015-8721
- https://www.wireshark.org/security/wnpa-sec-2015-40
| Link | Providers | Tags |
|---|---|---|
| http://www.debian.org/security/2016/dsa-3505 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html | x_refsource_CONFIRM | |
| http://www.securityfocus.com/bid/79814 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id/1034551 | vdb-entryx_refsource_SECTRACK | |
| http://www.wireshark.org/security/wnpa-sec-2015-40.html | x_refsource_CONFIRMVendor Advisory | |
| https://access.redhat.com/security/cve/CVE-2015-8721 | Vendor Advisory | |
| https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=11548 | x_refsource_CONFIRM | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1296065 | Issue Tracking | |
| https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=cec0593ae6c3bca65eff65741c2a10f3de3e0afe | x_refsource_CONFIRM | |
| https://nvd.nist.gov/vuln/detail/CVE-2015-8721 | ||
| https://security.gentoo.org/glsa/201604-05 | vendor-advisoryx_refsource_GENTOO | |
| https://www.cve.org/CVERecord?id=CVE-2015-8721 | ||
| https://www.wireshark.org/security/wnpa-sec-2015-40 |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jan 4, 2016
Updated Aug 6, 2024
Reserved Jan 3, 2016
Link CVE-2015-8721
CISA Vulnrichment
Updated n/a