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CVE-2016-9296

22
FAUCET Score

CVE-2016-9296 is a null pointer dereference vulnerability affecting p7zip versions 16.02 and older. This flaw, located in the 7z.so library and 7z applications, can lead to a denial of service (DoS) by crashing the software when processing specially crafted malformed 7z files. Rated with a CVSSv3 score of 7.5 (High), it requires no user interaction or privileges, making it easily exploitable over a network. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
16.02CPE matchmatch criteria
cpe:2.3:a:7-zip:p7zip:16.02:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
7.02%
Probability of exploitation in next 30 days
EPSS Percentile
93.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0702 is in the 89th percentile among its peer group of 51,506 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (40)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: azl3 p7zip 16.02-23 on Azure Linux 3.0Fixed in: 16.02-23
microsoftpatch availablevia msrc
Product: cm1 p7zip 16.02-22 on CBL Mariner 1.0Fixed in: 16.02-22
microsoftpatch availablevia msrc
Product: cbl2 p7zip 16.02-22 on CBL Mariner 2.0Fixed in: 16.02-22
microsoftpatch availablevia msrc
Product: 16884-17084Fixed in: 16.02-23
microsoftpatch availablevia msrc
Product: 16884-16817Fixed in: 16.02-23
microsoftpatch availablevia msrc
Product: 16882-16820Fixed in: 16.02-22
microsoftpatch availablevia msrc
Product: 16883-16823Fixed in: 16.02-22
microsoftpatch availablevia msrc
Product: 12571-12139Fixed in: 16.02-22
microsoftpatch availablevia msrc
Product: 12572-12139Fixed in: 16.02-22
microsoftpatch availablevia msrc
Product: 12573-12139Fixed in: 16.02-22
microsoftpatch availablevia msrc
Product: 12574-12139Fixed in: 16.02-22
microsoftpatch availablevia msrc
Product: 12575-12140Fixed in: 16.02-22
microsoftpatch availablevia msrc
Product: 12580-12356Fixed in: 16.02-23
microsoftpatch availablevia msrc
Product: 12581-12357Fixed in: 16.02-23
microsoftpatch availablevia msrc
Product: 12582-12357Fixed in: 16.02-23
microsoftpatch availablevia msrc
Product: 12580-12357Fixed in: 16.02-23
microsoftpatch availablevia msrc
Product: p7zip-16.02-22.cm2.x86_64.rpm on CBL Mariner 2.0 x64Fixed in: 16.02-22
microsoftpatch availablevia msrc
Product: p7zip-plugins-16.02-22.cm2.x86_64.rpm on CBL Mariner 2.0 x64Fixed in: 16.02-22
microsoftpatch availablevia msrc
Product: p7zip-doc-16.02-22.cm2.noarch.rpm on CBL Mariner 2.0 x64Fixed in: 16.02-22
microsoftpatch availablevia msrc
Product: p7zip-debuginfo-16.02-22.cm2.x86_64.rpm on CBL Mariner 2.0 x64Fixed in: 16.02-22
microsoftpatch availablevia msrc
Product: p7zip-16.02-22.cm2.aarch64.rpm on CBL Mariner 2.0 ARMFixed in: 16.02-22
microsoftpatch availablevia msrc
Product: p7zip-plugins-16.02-22.cm2.aarch64.rpm on CBL Mariner 2.0 ARMFixed in: 16.02-22
microsoftpatch availablevia msrc
Product: p7zip-doc-16.02-22.cm2.noarch.rpm on CBL Mariner 2.0 ARMFixed in: 16.02-22
microsoftpatch availablevia msrc
Product: p7zip-debuginfo-16.02-22.cm2.aarch64.rpm on CBL Mariner 2.0 ARMFixed in: 16.02-22
microsoftpatch availablevia msrc
Product: p7zip-16.02-23.azl3.x86_64.rpm on Azure Linux 3.0 x64Fixed in: 16.02-23
microsoftpatch availablevia msrc
Product: p7zip-plugins-16.02-23.azl3.x86_64.rpm on Azure Linux 3.0 x64Fixed in: 16.02-23
microsoftpatch availablevia msrc
Product: p7zip-doc-16.02-23.azl3.noarch.rpm on Azure Linux 3.0 x64Fixed in: 16.02-23
microsoftpatch availablevia msrc
Product: 12576-12140Fixed in: 16.02-22
microsoftpatch availablevia msrc
Product: 12573-12140Fixed in: 16.02-22
microsoftpatch availablevia msrc
Product: 12577-12140Fixed in: 16.02-22
microsoftpatch availablevia msrc
Product: 12578-12356Fixed in: 16.02-23
microsoftpatch availablevia msrc
Product: 12579-12356Fixed in: 16.02-23
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 x64Fixed in: 16.02-22
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 ARMFixed in: 16.02-22
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 x64Fixed in: 16.02-22
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 ARMFixed in: 16.02-22
microsoftpatch availablevia msrc
Product: p7zip-16.02-23.azl3.aarch64.rpm on Azure Linux 3.0 ARMFixed in: 16.02-23
microsoftpatch availablevia msrc
Product: p7zip-plugins-16.02-23.azl3.aarch64.rpm on Azure Linux 3.0 ARMFixed in: 16.02-23
microsoftpatch availablevia msrc
Product: p7zip-doc-16.02-23.azl3.noarch.rpm on Azure Linux 3.0 ARMFixed in: 16.02-23

Vendor Advisories (3)

microsoft2024-Jun/CVE-2016-9296

CVE-2016-9296

Jun 11, 2024
microsoft2021-Dec/CVE-2016-9296

CVE-2016-9296

Dec 14, 2021
microsoft2016-Nov/CVE-2016-9296Important

A null pointer dereference bug affects the 16.02 and many old versions of p7zip. A lack of null pointer check for the variable folders.PackPositions in function CInArchive::ReadAndDecodePackedStreams in CPP/7zip/Archive/7z/7zIn.cpp as used in the 7z.so library and in 7z applications will cause a crash and a denial of service when decoding malformed 7z files.

Nov 8, 2016

References

github.com / yangke/7zip-null-pointer-dereference
Issue TrackingPatchThird Party Advisory
sourceforge.net / p/p7zip/bugs/185
Issue TrackingThird Party Advisory
sourceforge.net / p/p7zip/discussion/383043/thread/648d34db
ExploitThird Party Advisory
securityfocus.com / bid/94294
Third Party AdvisoryVDB Entry