汇总 libvncserver_project 相关全部产品的 CVE 与安全漏洞情报，包括 CVSS、EPSS、公开时间与漏洞情报数据。
历史漏洞主要涉及 缓冲区溢出与内存损坏 等问题，部分漏洞可能导致 应用崩溃，并影响 软件部署与生产负载 相关场景。
相关漏洞数据主要来源于公开漏洞披露与安全公告，可用于评估历史漏洞暴露面与修复优先级。
| CVE | 摘要 | 来源 | 最高 CVSS | EPSS % | 公开时间 | 更新时间 |
|---|---|---|---|---|---|---|
| CVE-2026-32854 | LibVNCServer versions 0.9.15 and prior (fixed in commit dc78dee) contain null pointer dereference vulnerabilities in the HTTP proxy handlers within httpProcessInput() in httpd.c that allow remote attackers to cause a denial of service by sending specially crafted HTTP requests. Attackers can exploit missing validation of strchr() return values in the CONNECT and GET proxy handling paths to trigger null pointer dereferences and crash the server when httpd and proxy features are enabled. | [email protected] | 6.3 | 5.32% | 2026-03-24 | 2026-06-17 |
| CVE-2026-32853 | LibVNCServer versions 0.9.15 and prior (fixed in commit 009008e) contain a heap out-of-bounds read vulnerability in the UltraZip encoding handler that allows a malicious VNC server to cause information disclosure or application crash. Attackers can exploit improper bounds checking in the HandleUltraZipBPP() function by manipulating subrectangle header counts to read beyond the allocated heap buffer. | [email protected] | 6.9 | 0.44% | 2026-03-24 | 2026-06-17 |
| CVE-2020-29260 | libvncclient v0.9.13 was discovered to contain a memory leak via the function rfbClientCleanup(). | [email protected] | 7.5 | 0.94% | 2022-09-02 | 2026-06-16 |
| CVE-2020-25708 | A divide by zero issue was found to occur in libvncserver-0.9.12. A malicious client could use this flaw to send a specially crafted message that, when processed by the VNC server, would lead to a floating point exception, resulting in a denial of service. | [email protected] | 7.5 | 1.61% | 2020-11-27 | 2026-06-16 |
| CVE-2017-18922 | It was discovered that websockets.c in LibVNCServer prior to 0.9.12 did not properly decode certain WebSocket frames. A malicious attacker could exploit this by sending specially crafted WebSocket frames to a server, causing a heap-based buffer overflow. | [email protected] | 9.8 | 2.26% | 2020-06-30 | 2026-06-16 |
| CVE-2020-14401 | An issue was discovered in LibVNCServer before 0.9.13. libvncserver/scale.c has a pixel_value integer overflow. | [email protected] | 6.5 | 2.46% | 2020-06-17 | 2026-06-16 |
| CVE-2020-14400 | An issue was discovered in LibVNCServer before 0.9.13. Byte-aligned data is accessed through uint16_t pointers in libvncserver/translate.c. NOTE: Third parties do not consider this to be a vulnerability as there is no known path of exploitation or cross of a trust boundary | [email protected] | 7.5 | 2.84% | 2020-06-17 | 2026-06-16 |
| CVE-2020-14399 | An issue was discovered in LibVNCServer before 0.9.13. Byte-aligned data is accessed through uint32_t pointers in libvncclient/rfbproto.c. NOTE: there is reportedly "no trust boundary crossed. | [email protected] | 7.5 | 2.80% | 2020-06-17 | 2026-06-16 |
| CVE-2010-5304 | A NULL pointer dereference flaw was found in the way LibVNCServer before 0.9.9 handled certain ClientCutText message. A remote attacker could use this flaw to crash the VNC server by sending a specially crafted ClientCutText message from a VNC client. | [email protected] | 7.5 | 3.12% | 2020-02-05 | 2026-06-16 |
| CVE-2018-7225 | An issue was discovered in LibVNCServer through 0.9.11. rfbProcessClientNormalMessage() in rfbserver.c does not sanitize msg.cct.length, leading to access to uninitialized and potentially sensitive data or possibly unspecified other impact (e.g., an integer overflow) via specially crafted VNC packets. | [email protected] | 9.8 | 6.45% | 2018-02-19 | 2026-06-16 |
| CVE-2016-9942 | Heap-based buffer overflow in ultra.c in LibVNCClient in LibVNCServer before 0.9.11 allows remote servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted FramebufferUpdate message with the Ultra type tile, such that the LZO payload decompressed length exceeds what is specified by the tile dimensions. | [email protected] | 9.8 | 3.72% | 2016-12-31 | 2026-06-16 |
| CVE-2016-9941 | Heap-based buffer overflow in rfbproto.c in LibVNCClient in LibVNCServer before 0.9.11 allows remote servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted FramebufferUpdate message containing a subrectangle outside of the client drawing area. | [email protected] | 9.8 | 3.73% | 2016-12-31 | 2026-06-16 |