Apache Tomcat

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

Apache Tomcat

Product reference — Apache Tomcat by Apache · sector: Open Source Ecosystems. Cumulative disclosure record for this product across the archive.

Product totals

Disclosures & known-exploited
	All-time	YTD
CVEs	13	12
KEV entries	2	1

Rate & severity
KEV/100	Med CVSS	Med EPSS	C	H	M	L
15.4	7.5	.0058	4	6	3	0

KEV/100 = KEV entries ÷ CVEs × 100. Med CVSS / Med EPSS are medians over this product's disclosures. C/H/M/L = disclosures by CVSS severity band.

Monthly disclosures

Trend (by first-seen month, full archive): ▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▁█▄▂

Last 12 months (new CVEs by first-seen day)
Month	New CVEs
2025-09	0
2025-10	0
2025-11	0
2025-12	0
2026-01	0
2026-02	0
2026-03	0
2026-04	1
2026-05	0
2026-06	7
2026-07	3
2026-08	1

Notable CVEs

Ranked by the published formula: KEV → EPSS → CVSS → CVE ID.

Notable (ranked)
CVE	CVSS	EPSS %ile	Severity	KEV	First seen
CVE-2017-12615	8.1	99.9	HIGH	YES	2022-03-25
CVE-2026-34486	7.5	99.6	HIGH	YES	2026-08-04
CVE-2026-29146	7.5	93.0	HIGH	—	2026-04-09
CVE-2026-50229	6.1	90.2	MEDIUM	—	2026-06-29
CVE-2026-55957	7.3	85.7	HIGH	—	2026-06-29
CVE-2026-55956	6.5	72.7	MEDIUM	—	2026-06-29
CVE-2026-53404	7.3	45.2	HIGH	—	2026-06-29
CVE-2026-55276	9.1	43.3	CRITICAL	—	2026-06-29
CVE-2026-53434	9.1	42.3	CRITICAL	—	2026-06-29
CVE-2026-59084	9.1	41.2	CRITICAL	—	2026-07-14
CVE-2026-55955	6.5	38.7	MEDIUM	—	2026-06-29
CVE-2026-66299	7.5	37.6	HIGH	—	2026-07-28
CVE-2026-59083	9.1	30.2	CRITICAL	—	2026-07-14

Recent CVEs

Most recently seen
CVE	CVSS	EPSS %ile	Severity	KEV	First seen
CVE-2026-34486	7.5	99.6	HIGH	YES	2026-08-04
CVE-2026-66299	7.5	37.6	HIGH	—	2026-07-28
CVE-2026-59084	9.1	41.2	CRITICAL	—	2026-07-14
CVE-2026-59083	9.1	30.2	CRITICAL	—	2026-07-14
CVE-2026-55957	7.3	85.7	HIGH	—	2026-06-29
CVE-2026-55956	6.5	72.7	MEDIUM	—	2026-06-29
CVE-2026-55955	6.5	38.7	MEDIUM	—	2026-06-29
CVE-2026-55276	9.1	43.3	CRITICAL	—	2026-06-29
CVE-2026-53434	9.1	42.3	CRITICAL	—	2026-06-29
CVE-2026-53404	7.3	45.2	HIGH	—	2026-06-29
CVE-2026-50229	6.1	90.2	MEDIUM	—	2026-06-29
CVE-2026-29146	7.5	93.0	HIGH	—	2026-04-09
CVE-2017-12615	8.1	99.9	HIGH	YES	2022-03-25

KEV entries

CISA Known Exploited Vulnerabilities (newest addition first)
CVE	KEV added	CVSS	EPSS %ile	Severity
CVE-2026-34486	2026-08-04	7.5	99.6	HIGH
CVE-2017-12615	2022-03-25	8.1	99.9	HIGH

Vendor: Apache — all products and the full vendor record.

Methodology

A product is a (vendor, product) pair as named in the affected-product data. Rate statistics are arithmetic over published figures. Counts key to first-seen day. Raw counts are not comparable across products; this is a reference page assembled from the public record, not a ranking by our judgment.