CVE-2018-1002208

Exp

SharpZipLib before 1.0 RC1 is vulnerable to directory traversal, allowing attackers to write to arbitrary files via a ../ (dot dot slash) in a Zip archive entry that is mishandled during extraction. This vulnerability is also known as 'Zip-Slip'.

Published: 2018-07-25 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-1002208 is rated High Exploit Risk (62.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.75%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2018-1002208

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2018-1002208

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 2026-05-22 0.60% 0.75% +0.15%
2 2026-04-01 0.55% 0.60% +0.06%
3 2025-11-24 — 0.55% —

Full EPSS history (17 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-1002208

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.5 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N 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:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 1.8 3.6 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N 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:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2018-1002208

GitHub Security Advisory for CVE-2018-1002208

GHSA-cqj4-m2pc-v9m5 · Severity: medium · Ecosystem: nuget — Improper Limitation of a Pathname to a Restricted Directory in SharpZipLib

OS Trackers for CVE-2018-1002208

vendor priority summary link
debian not yet assigned CVE-2018-1002208 not yet assigned priority: Debian including 1 source packages (mono), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2018-1002208
ubuntu low CVE-2018-1002208 low priority: Ubuntu including 2 source packages (mono, mono-reference-assemblies), 32 status rows across 16 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 13, not-affected 12, needed 4, needs-triage 2, released 1. https://ubuntu.com/security/CVE-2018-1002208

Affected software / configurations for CVE-2018-1002208

Vendor Product Version Raw CPE
sharpziplib_project sharpziplib <= 0.86.0.518 cpe:2.3:a:sharpziplib_project:sharpziplib:*:*:*:*:*:*:*:*

References for CVE-2018-1002208

URL Tags
https://github.com/icsharpcode/SharpZipLib/issues/232 Issue Tracking Patch Third Party Advisory
https://github.com/icsharpcode/SharpZipLib/wiki/Release-1.0 Issue Tracking Patch Third Party Advisory
https://github.com/snyk/zip-slip-vulnerability Third Party Advisory
https://snyk.io/research/zip-slip-vulnerability Third Party Advisory
https://snyk.io/vuln/SNYK-DOTNET-SHARPZIPLIB-60247 Exploit Patch Technical Description
cvelogic Threat Intelligence