CVE-1999-1111

CVE-1999-1111 is a high-severity vulnerability in Immunix Stackguard with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

Vulnerability in StackGuard before 1.21 allows remote attackers to bypass the Random and Terminator Canary security mechanisms by using a non-linear attack which directly modifies a pointer to a return address instead of using a buffer overflow to reach the return address entry itself.

Frequently asked questions

What is CVE-1999-1111?
Vulnerability in StackGuard before 1.21 allows remote attackers to bypass the Random and Terminator Canary security mechanisms by using a non-linear attack which directly modifies a pointer to a return address instead of using a buffer overflow to reach the return address entry itself.
How severe is CVE-1999-1111?
CVE-1999-1111 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-1999-1111 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-1111?
CVE-1999-1111 affects Immunix Stackguard. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-1999-1111?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-1999-1111 published?
CVE-1999-1111 was published on 1999-11-09 and last updated on 2026-06-16.

References

Affected products (1)