CVE-2018-1000035

A heap-based buffer overflow exists in Info-Zip UnZip version <= 6.00 in the processing of password-protected archives that allows an attacker to perform a denial of service or to possibly achieve code execution.

Published: 2018-02-09 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-1000035 is rated Moderate Risk (60.5/100): CVSS High severity, with high exploitation likelihood (EPSS 30.89%, 98th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2018-1000035

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 63.56% 30.89% -32.68%
2 2026-05-29 62.66% 63.56% +0.90%
3 2026-02-27 — 62.66% —

Full EPSS history (22 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-1000035

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 3.0 HIGH
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2018-1000035

OS Trackers for CVE-2018-1000035

vendor priority summary link
alpine high CVE-2018-1000035: 1 source package rows (unzip); 10 state rows across 10 repos (3.10-main, 3.11-main, 3.12-main, 3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 10, open 0. https://security.alpinelinux.org/vuln/CVE-2018-1000035
debian not yet assigned CVE-2018-1000035 not yet assigned priority: Debian including 1 source packages (unzip), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2018-1000035
gentoo normal CVE-2018-1000035: 1 GLSA(s) (202003-58), 1 atom(s) (app-arch/unzip); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2018-1000035
redhat low — https://access.redhat.com/security/cve/CVE-2018-1000035
suse high CVE-2018-1000035 severity important: SUSE including 249 source package names (0.23.1-12.3:unzip-6.00-4.3.1, amazon/suse-sles-15-sp1-chost-byos-v20210304-hvm-ssd-x86_64, …), 510 product×package rows across 270 product lines (Container bci/spack, Image SLES12-SP5-Azure-BYOS, … (270 product lines)): Fixed 263, Known Affected 231, Known Not Affected 16. https://www.suse.com/security/cve/CVE-2018-1000035/
ubuntu low CVE-2018-1000035 low priority: Ubuntu including 1 source packages (unzip), 10 status rows across 10 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, trusty, upstream, xenial): released 7, ignored 2, needs-triage 1. https://ubuntu.com/security/CVE-2018-1000035

Affected software / configurations for CVE-2018-1000035

Vendor Product Version Raw CPE
unzip_project unzip <= 6.00 cpe:2.3:a:unzip_project:unzip:*:*:*:*:*:*:*:*

References for CVE-2018-1000035

cvelogic Threat Intelligence