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CVE-2017-8847

21
FAUCET Score

CVE-2017-8847 describes a denial-of-service vulnerability in lrzip 0.631, specifically within the libzpaq/libzpaq.h component, where a NULL pointer dereference can be triggered by a crafted archive. This vulnerability is rated Medium severity with a CVSS score of 5.5, indicating a local attack vector with low complexity that can lead to high availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
0.631CPE matchmatch criteria
cpe:2.3:a:long_range_zip_project:long_range_zip:0.631:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/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
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.38%
Probability of exploitation in next 30 days
EPSS Percentile
69.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0138 is in the 80th percentile among its peer group of 5,765 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 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 (1)

github_advisorypatch availablevia nvd_reference
View patch

References

blogs.gentoo.org / ago/2017/05/07/lrzip-null-pointer-dereference-in-bufreadget-libzpaq-h
Third Party AdvisoryVDB Entry
github.com / ckolivas/lrzip/issues/67
Issue TrackingPatchThird Party Advisory
security.gentoo.org / glsa/202005-01
Third Party Advisory