CVE-2010-5300: Stack-based buffer overflow in Jzip 1.3 through 2.0.0.132900 allows remote attackers to cause a denial of serv

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MEDIUM 6.8DOWNGRADE

CVE-2010-5300 is a medium-severity flaw (CVSS 6.8) affecting jzip. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stack-based buffer overflow in Jzip 1.3 through 2.0.0.132900 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long file name in a zip archive.

Why this priority

EPSS top 3%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	6.8 (Medium)
EPSS exploit chance	14.6% (top 3%)
CISA exploited list	No
Weakness	CWE-119
Published	2014-06-11
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: jzip

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2014-06-11 14:55 UTCPublished CVE record published
2026-06-16 23:26 UTCUpdated Record last modified

jzip jzip DOWNGRADE

Affected: 1.3 · 2.0.0.132900

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.3 (Debian / Ubuntu)

apt-cache madison jzip sudo apt install jzip=<VERSION_BEFORE_1.3> sudo apt-mark hold jzip

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

dnf --showduplicates list jzip sudo dnf downgrade jzip-<VERSION_BEFORE_1.3> sudo dnf versionlock add jzip

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Jzip - Buffer Overflow (PoC) (SEH Unicode)
Exploit-DB: Jzip 1.3 - '.zip' Unicode Buffer Overflow (PoC)

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-2010-5300?

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

Is CVE-2010-5300 being exploited?

CVE-2010-5300 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-2010-5300 affect?

CVE-2010-5300 affects jzip. Severity is medium (CVSS 6.8). Stack-based buffer overflow in Jzip 1.3 through 2.0.0.132900 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long file name in a zip archive.

How urgent is CVE-2010-5300?

Priority 53/100. EPSS top 3%: very likely to be exploited; Public exploit reference

References

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