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CVE-2019-9923

20
FAUCET Score

CVE-2019-9923 is a NULL pointer dereference vulnerability in GNU Tar versions prior to 1.32, affecting products like GNU Tar and OpenSUSE Leap. This high-severity vulnerability (CVSS 7.5) can be exploited remotely without user interaction, leading to a denial of service (availability impact). There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.32CPE matchmatch criteria
cpe:2.3:a:gnu:tar:*:*:*:*:*:*:*:*
15.0CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*

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
3.03%
Probability of exploitation in next 30 days
EPSS Percentile
86.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0303 is in the 75th percentile among its peer group of 51,485 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

Vendor Patches (3)

redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: tar
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: tar
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: tar

Vendor Advisories (1)

redhatCVE-2019-9923Low

tar: null-pointer dereference in pax_decode_header in sparse.c

Jan 2, 2019

References

git.savannah.gnu.org / cgit/tar.git/commit
Mailing ListPatchVendor Advisory
lists.opensuse.org / opensuse-security-announce/2019-04/msg00077.html
Mailing ListThird Party Advisory
savannah.gnu.org / bugs
Permissions RequiredThird Party Advisory
bugs.launchpad.net / ubuntu/+source/tar/+bug/1810241
Issue TrackingPatchThird Party Advisory
lists.apache.org / thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
lists.apache.org / thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E