CVE-1999-1102: lpr on SunOS 4.1.1, BSD 4.3, A/UX 2.0.1, and other BSD-based operating systems allows local users to create or

Q: How do I fix CVE-1999-1102?

irix: upgrade to newer than 5.2; a ux: mitigate or apply the listed mitigation; bsd: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-1999-1102 being exploited?

CVE-1999-1102 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-1999-1102 affect?

CVE-1999-1102 affects irix, a ux, bsd. Severity is low (CVSS 2.1). lpr on SunOS 4.1.1, BSD 4.3, A/UX 2.0.1, and other BSD-based operating systems allows local users to create or overwrite arbitrary files via a symlink attack that is triggered after invoking lpr 1000 times.

Q: How urgent is CVE-1999-1102?

Priority 22/100. Public exploit reference

Routine

LOW 2.1UPGRADEMITIGATEMITIGATE

CVE-1999-1102 is a low-severity flaw (CVSS 2.1) affecting irix, a ux, bsd. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

lpr on SunOS 4.1.1, BSD 4.3, A/UX 2.0.1, and other BSD-based operating systems allows local users to create or overwrite arbitrary files via a symlink attack that is triggered after invoking lpr 1000 times.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	2.1 (Low)
EPSS exploit chance	0.4% (top 62%)
CISA exploited list	No
Published	1999-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: apple · bsd · sgi · sun

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

Am I affected?

Timeline

1999-12-31 05:00 UTCPublished CVE record published
2026-06-16 21:49 UTCUpdated Record last modified

sgi irix UPGRADE

Affected: <= 5.2

Fixed in: newer than 5.2

Safe to downgrade to: no unaffected older release

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.

apple a ux MITIGATE

Affected: 2.0.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0.1

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.

bsd bsd MITIGATE

Affected: 4.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.3

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.

sun sunos UPGRADE

Affected: <= 4.1.1

Fixed in: newer than 4.1.1

Safe to downgrade to: no unaffected older release

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-1999-1102?

irix: upgrade to newer than 5.2; a ux: mitigate or apply the listed mitigation; bsd: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-1999-1102 being exploited?

CVE-1999-1102 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-1999-1102 affect?

CVE-1999-1102 affects irix, a ux, bsd. Severity is low (CVSS 2.1). lpr on SunOS 4.1.1, BSD 4.3, A/UX 2.0.1, and other BSD-based operating systems allows local users to create or overwrite arbitrary files via a symlink attack that is triggered after invoking lpr 1000 times.

How urgent is CVE-1999-1102?

Priority 22/100. Public exploit reference

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References

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