Libxls
Vendor:
First CVE: Nov 20, 2017 · Active for 8 years
20
Total CVEs
More Total CVEs than 94% of tracked products
3.3
Avg CVEs / Year
Higher CVE frequency than 82% of tracked products
7.2
Avg CVSS
Higher Avg CVSS than 44% of tracked products
0.0%
KEV Rate
Bottom 1%
Trends Over Time
The number and severity of CVEs published that impact Libxls over time
Volume of CVEsAvg CVSS Base Score
First CVE
Nov 20, 2017
8 years ago
Most Recent CVE
Jun 3, 2026
51 days ago
CVE Severity & Scoring
Libxls20 CVEs
55%
45%
All CVEs352,231 CVEs
45%
40%
11%
MediumHigh
Attack Vector
Local6 (30.0%)
Network14 (70.0%)
Unknown0 (0.0%)
Physical0 (0.0%)
Adjacent Network0 (0.0%)
Attack Complexity
Low20 (100.0%)
High0 (0.0%)
Unknown0 (0.0%)
User Interaction
None2 (10.0%)
Unknown0 (0.0%)
Required18 (90.0%)
Privileges Required
Low0 (0.0%)
High0 (0.0%)
None20 (100.0%)
Unknown0 (0.0%)
Top CVEs
Signals from CVEs in this product scope (20 CVEs).
20 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2026-26824MEDIUM libxls through version 1.6.3 contains a use of uninitialized memory vulnerability in the OLE container parser. Memory allocated for the Master Sector Allocation Table (MSAT) in rea | Jun 3, 2026 | 6.5 | 28 | NO | NO |
CVE-2017-12108HIGH An exploitable integer overflow vulnerability exists in the xls_preparseWorkSheet function of libxls 1.4 when handling a MULBLANK record. A specially crafted XLS file can cause a m | Apr 24, 2018 | 8.8 | 27 | NO | NO |
CVE-2018-20452HIGH The read_MSAT_body function in ole.c in libxls 1.4.0 has an invalid free that allows attackers to cause a denial of service (application crash) or possibly have unspecified other i | Dec 25, 2018 | 8.8 | 26 | NO | NO |
CVE-2017-2896HIGH An exploitable out-of-bounds write vulnerability exists in the xls_mergedCells function of libxls 1.4. . A specially crafted XLS file can cause a memory corruption resulting in rem | Nov 20, 2017 | 7.8 | 26 | NO | NO |
CVE-2026-26825MEDIUM A use-of-uninitialized memory vulnerability exists in libxls 1.6.3 when parsing malformed XLS files. The issue is reachable via xls_parseWorkBook() and is triggered by uninitialize | Jun 3, 2026 | 5.3 | 25 | NO | NO |
CVE-2017-12110HIGH An exploitable integer overflow vulnerability exists in the xls_appendSST function of libxls 1.4.A specially crafted XLS file can cause memory corruption resulting in remote code e | Nov 20, 2017 | 7.8 | 25 | NO | NO |
CVE-2017-12109HIGH An exploitable integer overflow vulnerability exists in the xls_preparseWorkSheet function of libxls 1.4 when handling a MULRK record. A specially crafted XLS file can cause a memo | Apr 24, 2018 | 8.8 | 24 | NO | NO |
CVE-2021-27836MEDIUM An issue was discoverered in in function xls_getWorkSheet in xls.c in libxls 1.6.2, allows attackers to cause a denial of service, via a crafted XLS file. | Nov 3, 2021 | 6.5 | 23 | NO | NO |
CVE-2017-2910HIGH An exploitable Out-of-bounds Write vulnerability exists in the xls_addCell function of libxls 2.0. A specially crafted xls file can cause a memory corruption resulting in remote co | Dec 2, 2020 | 8.8 | 22 | NO | NO |
CVE-2018-20450MEDIUM The read_MSAT function in ole.c in libxls 1.4.0 has a double free that allows attackers to cause a denial of service (application crash) via a crafted file, a different vulnerabili | Dec 25, 2018 | 6.5 | 22 | NO | NO |
Exploit Exposure
Signals from CVEs in this product scope (20 CVEs).
CISA KEV
0 CVEs
0.0% of CVEs· Bottom 1%
Metasploit
0 CVEs
0.0% of CVEs· Bottom 1%
Nuclei
0 CVEs
0.0% of CVEs· Bottom 1%
ExploitDB
0 CVEs
0.0% of CVEs· Bottom 1%
Social Chatter
Signals from CVEs in this product scope (20 CVEs).
Media Mentions
Signals from CVEs in this product scope (20 CVEs).
Top CNAs Publishing CVEs For Libxls
Top CWEs
Versions
| Version | CVE Count | Avg CVSS | Avg EPSS | KEV | Exploits |
|---|---|---|---|---|---|
| 2.0.0 | 1 | 8.8 | 2.1% | 0 | 0 |
| 1.6.3 | 1 | 5.3 | 0.2% | 0 | 0 |
| 1.6.2 | 7 | 6.5 | 0.9% | 0 | 0 |
| 1.4.0 | 3 | 7.7 | 1.5% | 0 | 0 |
| 1.4 | 5 | 8.2 | 2.4% | 0 | 0 |
| 1.3.4 | 1 | 7.8 | 2.1% | 0 | 0 |