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Libx11: vulnerabilities and CVEs
Libx11 has 4 published vulnerabilities, 1 of them in the last 12 months. 0 are rated critical and 0 are listed by CISA as actively exploited.
CVEs4
Last 12 months1
Critical0
Actively exploited0
All vulnerabilities in the catalogue →⭐ Follow this technology
Latest vulnerabilities
| CVE | Severity | EPSS | Active exploitation | Published | Description |
|---|---|---|---|---|---|
| CVE-2026-88806 | High (7.5) | 0.20% | — | Sep 21, 2026 | A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the key_sym_map. |
| CVE-2013-2004 | Medium (6.8) | 1.6% | — | Jun 15, 2013 | The (1) GetDatabase and (2) _XimParseStringFile functions in X.org libX11 1.5.99.901 (1.6 RC1) and earlier do not restrict the recursion depth when processing directives to include files, which allows X servers to cause… |
| CVE-2013-1997 | Medium (6.8) | 2.1% | — | Jun 15, 2013 | Multiple buffer overflows in X.org libX11 1.5.99.901 (1.6 RC1) and earlier allow X servers to cause a denial of service (crash) and possibly execute arbitrary code via crafted length or index values to the (1)… |
| CVE-2013-1981 | Medium (6.8) | 1.4% | — | Jun 15, 2013 | Multiple integer overflows in X.org libX11 1.5.99.901 (1.6 RC1) and earlier allow X servers to trigger allocation of insufficient memory and a buffer overflow via vectors related to the (1) XQueryFont, (2)… |
🎯 How it gets exploited (ATT&CK techniques)
Number of CVEs of this technology mapped to each exploitation or primary-impact technique.