CVE-2018-13410: Info-ZIP Zip 3.0, when the -T and -TT command-line options are used, allows attackers to cause a denial of ser

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2018-13410 is a critical-severity flaw (CVSS 9.8) affecting zip. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Info-ZIP Zip 3.0, when the -T and -TT command-line options are used, allows attackers to cause a denial of service (invalid free and application crash) or possibly have unspecified other impact because of an off-by-one error. NOTE: it is unclear whether there are realistic scenarios in which an untrusted party controls the -TT value, given that the entire purpose of -TT is execution of arbitrary commands

Why this priority

Critical severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	3.8% (top 10%)
CISA exploited list	No
Weakness	CWE-416
Published	2018-07-06
Last modified	2026-09-18

Publisher (CNA): MITRE · Vendor: info-zip project

Last updated 2026-09-18 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2018-07-06 19:29 UTCPublished CVE record published
2026-09-18 11:17 UTCUpdated Record last modified

info-zip project zip DOWNGRADE

Affected: 3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0

1. Check installed version

apt-cache policy zip || rpm -q zip || zip --version

2. No fixed release: DOWNGRADE to a release before 3.0 (Debian / Ubuntu)

apt-cache madison zip sudo apt install zip=<VERSION_BEFORE_3.0> sudo apt-mark hold zip

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list zip sudo dnf downgrade zip-<VERSION_BEFORE_3.0> sudo dnf versionlock add zip

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-13410?

zip: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-13410 being exploited?

CVE-2018-13410 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-13410 affect?

CVE-2018-13410 affects zip. Severity is critical (CVSS 9.8). Info-ZIP Zip 3.0, when the -T and -TT command-line options are used, allows attackers to cause a denial of service (invalid free and application crash) or possibly have unspecified other impact because of an off-by-one error. NOTE: it is un

How urgent is CVE-2018-13410?

Priority 62/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-39135 HIGH 7.8 DOWNGRADE An issue in Zip Swift v2.1.2 allows attackers to execute a path traversal attack via a crafted zip entry.
CVE-2018-13684 HIGH 7.5 MITIGATE The mintToken function of a smart contract implementation for ZIP, an Ethereum token, has an integer overflow

References

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