CVE-1999-1123

NONECVSS 0.0Weaponized

0.0

EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.

No confirmed exploitation signals yet

CISA-KEV: Not listedEPSS: 1%CVSS: —Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

The installation of Sun Source (sunsrc) tapes allows local users to gain root privileges via setuid root programs (1) makeinstall or (2) winstall.

CVSS v3: —
EG Score: 0.0(none)
EPSS: 62.2%
KEV: Not listed

Published

May 20, 1991

Last Modified

June 16, 2026

References (10)

cve@mitrehttp://sunsolve.sun.com/pub-cgi/retrieve.pl?doctype=coll&doc=secbull/107&type=0&nav=sec.sba
cve@mitrehttp://www.cert.org/advisories/CA-1991-07.html
cve@mitrehttp://www.securityfocus.com/bid/21
cve@mitrehttp://www.securityfocus.com/bid/22
cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/582
af854a3a-2127-422b-91ae-364da2661108http://sunsolve.sun.com/pub-cgi/retrieve.pl?doctype=coll&doc=secbull/107&type=0&nav=sec.sba
af854a3a-2127-422b-91ae-364da2661108http://www.cert.org/advisories/CA-1991-07.html
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/21
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/22
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/582

Data Freshness Timeline

(refreshed 5× in last 7d / 32× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-24 14:01 UTCEPSS rescore
2026-06-23 21:29 UTCEPSS rescore
2026-06-22 14:22 UTCEPSS rescore
2026-06-21 01:56 UTCEPSS rescore
2026-06-19 19:22 UTCEPSS rescore
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2026-06-11 13:55 UTCEPSS rescore
2026-06-10 22:13 UTCEPSS rescore
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2026-06-05 06:07 UTCEPSS rescore
2026-06-04 13:09 UTCEPSS rescore
2026-06-02 20:10 UTCEPSS rescore
2026-06-01 13:48 UTCEPSS rescore
2026-05-31 23:16 UTCEG score recompute
2026-05-31 23:16 UTCGHSA enrichment
2026-05-31 22:27 UTCEPSS rescore

Show 22 more

2026-05-31 00:13 UTCEPSS rescore
2026-05-31 00:13 UTCEPSS rescore
2026-05-29 13:40 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-27 13:37 UTCEPSS rescore
2026-05-27 13:37 UTCEPSS rescore
2026-05-26 13:41 UTCEPSS rescore
2026-05-26 13:41 UTCEPSS rescore
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2026-05-26 07:16 UTCEPSS rescore
2026-05-26 07:16 UTCEPSS rescore
2026-05-24 16:42 UTCEPSS rescore
2026-05-22 21:15 UTCEPSS rescore
2026-05-21 22:38 UTCEPSS rescore
2026-05-20 22:36 UTCEPSS rescore
2026-05-20 11:20 UTCEPSS rescore
2026-05-20 11:20 UTCEPSS rescore
2026-05-18 21:29 UTCEPSS rescore
2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(2 references)

Working exploit code is in the public domain (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-19042✓ verified
First seen Nov 23, 1999
SunOS 4.1.1 - '/usr/release/bin/makeinstall' Local Privilege Escalation
Open source ↗
Exploit-DBEDB-19043✓ verified
First seen Nov 12, 1999
SunOS 4.1.1 - '/usr/release/bin/winstall' Local Privilege Escalation
Open source ↗

Frequently asked(4)

What is CVE-1999-1123?

CVE-1999-1123 is a none vulnerability published on May 20, 1991. The installation of Sun Source (sunsrc) tapes allows local users to gain root privileges via setuid root programs (1) makeinstall or (2) winstall.

When was CVE-1999-1123 disclosed?

CVE-1999-1123 was first published in the National Vulnerability Database on May 20, 1991, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-1999-1123 actively exploited?

CVE-1999-1123 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 62.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-1999-1123?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-1999-1123, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-1999-1123

📅 Published

🔄 Last Modified

🔗 References (10)