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CVE-2018-1000035· NVD / CVE Program· CNA mitre

A heap-based buffer overflow exists in Info-Zip UnZip version <= 6.00 in the processing of password-protected archives that allows an attack

Noroxi assessment

Priority: Plan (action score 40/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 30% (FIRST EPSS); higher than 98.1% of all records.
  • Someone with local access to the system can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: unzip (Alpine:v3.10) 6.0-r3; unzip (Debian:12) 6.0-22; unzip (Debian:8) 6.0-16+deb8u6.

Add it to your regular patch cycle. Upgrade to unzip (Alpine:v3.10) 6.0-r3; unzip (Debian:12) 6.0-22; unzip (Debian:8) 6.0-16+deb8u6 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

HighCVSS 7.8 · v3.0—No exploit Fix available
Published
Feb 9, 2018
Updated
Jun 16, 2026
EPSS
30.0% · 98th percentile

Report tools

JSON

Action score

40

Plan

Add it to your regular patch cycle.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
9 / 30 · 30.0%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
unzip projectunzip

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • unzip project unzipup to 6.00 inclusive

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Alpine:v3.10unzipbefore 6.0-r36.0-r3
Debian:12unzipbefore 6.0-226.0-22
Debian:8unzipbefore 6.0-16+deb8u66.0-16+deb8u6
openSUSE:Tumbleweedunzipbefore 6.00-39.16.00-39.1
SUSE:Linux Enterprise Desktop 12 SP3unzipbefore 6.00-33.8.16.00-33.8.1
SUSE:Linux Enterprise Module for Basesystem 15unzipbefore 6.00-4.3.16.00-4.3.1
SUSE:Linux Enterprise Server 11 SP4unzipbefore 6.00-11.18.3.16.00-11.18.3.1

Same product

unzip project: all records

Other highest-scoring records for the same primary product.

  • CVE-2020-36561Path traversal in github.com/yi-ge/unzip
    36Monitor
  • CVE-2014-8141Heap-based buffer overflow in the getZip64Data function in Info-ZIP UnZip 6.0 and earlier allows remote attackers to execute arbitrary code
    33Monitor
  • CVE-2014-8140Heap-based buffer overflow in the test_compr_eb function in Info-ZIP UnZip 6.0 and earlier allows remote attackers to execute arbitrary code
    33Monitor
  • CVE-2014-8139Heap-based buffer overflow in the CRC32 verification in Info-ZIP UnZip 6.0 and earlier allows remote attackers to execute arbitrary code via
    33Monitor
  • CVE-2014-9636unzip 6.0 allows remote attackers to cause a denial of service (out-of-bounds read or write and crash) via an extra field with an uncompress
    24Monitor
  • CVE-2022-0530A flaw was found in Unzip.
    23Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
alpine:unzip6.0-r3 · Alpine:v3.10Package registry (OSV)
debian:unzip6.0-22 · Debian:12Package registry (OSV)
opensuse:unzip6.00-39.1 · openSUSE:TumbleweedPackage registry (OSV)
suse:unzip6.00-11.18.3.1 · SUSE:Linux Enterprise Server 11 SP4Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-787 · Out-of-bounds Write

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records