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CVE-2018-6540

22
FAUCET Score

CVE-2018-6540 describes a denial-of-service vulnerability in ZZIPlib versions 0.13.67 and earlier, affecting Canonical and gdraheim distributions of ZZIPlib. This medium-severity vulnerability (CVSS 6.5) can be triggered remotely by an unauthenticated attacker sending a specially crafted zip file, leading to a bus error due to a misaligned address load. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
0.13.67CPE matchmatch criteria
cpe:2.3:a:gdraheim:zziplib:0.13.67:*:*:*:*:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
17.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
18.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.26%
Probability of exploitation in next 30 days
EPSS Percentile
81.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0226 is in the 91st percentile among its peer group of 26,209 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 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

Vendor Patches (1)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: zziplib

Vendor Advisories (1)

redhatCVE-2018-6540Low

zziplib: bus error in zzip_disk_findfirst function in zzip/mmapped.c

Feb 2, 2018

References

github.com / gdraheim/zziplib/issues/15
ExploitThird Party Advisory
lists.debian.org / debian-lts-announce/2020/06/msg00029.html
usn.ubuntu.com / 3699-1
Third Party Advisory