CVE-2019-14452: Sigil before 0.9.16 is vulnerable to a directory traversal, allowing attackers to write arbitrary files via a

This month

HIGH 7.5REMOTEWATCHLISTUPGRADEDOWNGRADEMITIGATE

CVE-2019-14452 is a high-severity flaw (CVSS 7.5) affecting sigil, flightcrew, ubuntu linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Sigil before 0.9.16 is vulnerable to a directory traversal, allowing attackers to write arbitrary files via a ../ (dot dot slash) in a ZIP archive entry that is mishandled during extraction.

Why this priority

High severity
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	3.7% (top 10%)
CISA exploited list	No
Weakness	CWE-22
Published	2019-07-31
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: canonical · flightcrew project · sigil-ebook

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-07-31 02:15 UTCPublished CVE record published
2026-06-17 02:18 UTCUpdated Record last modified

sigil-ebook sigil UPGRADE

Affected: < 0.9.16

Fixed in: 0.9.16

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 0.9.16 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade sigil

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade sigil

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

flightcrew project flightcrew DOWNGRADE

Affected: >= 0.9.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.9.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.9.2 (Debian / Ubuntu)

apt-cache madison flightcrew sudo apt install flightcrew=<VERSION_BEFORE_0.9.2> sudo apt-mark hold flightcrew

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

dnf --showduplicates list flightcrew sudo dnf downgrade flightcrew-<VERSION_BEFORE_0.9.2> sudo dnf versionlock add flightcrew

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.

canonical ubuntu linux MITIGATE

Affected: 16.04 · 18.04 · 19.04

Fixed in: no fixed release known

Safe to downgrade to: a release before 16.04

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2019-14452?

sigil: upgrade to 0.9.16; flightcrew: downgrade or apply the listed mitigation; ubuntu linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-14452 being exploited?

CVE-2019-14452 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-2019-14452 affect?

CVE-2019-14452 affects sigil, flightcrew, ubuntu linux. Severity is high (CVSS 7.5). Sigil before 0.9.16 is vulnerable to a directory traversal, allowing attackers to write arbitrary files via a ../ (dot dot slash) in a ZIP archive entry that is mishandled during extraction.

How urgent is CVE-2019-14452?

Priority 59/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Ubuntu vulnerabilities

References

← Back to latest CVEs