CVE-2018-9988

HIGHNVD 7.57.5—

7.5

ARM mbed TLS before 2.1.11, before 2.7.2, and before 2.8.0 has a buffer over-read in ssl_parse_server_key_exchange() that could cause a crash on invalid input.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 71.3%
KEV: Not listed

Published

April 10, 2018

Last Modified

November 21, 2024

References (10)

cve@mitrehttps://github.com/ARMmbed/mbedtls/commit/027f84c69f4ef30c0693832a6c396ef19e563ca1
cve@mitrehttps://github.com/ARMmbed/mbedtls/commit/a1098f81c252b317ad34ea978aea2bc47760b215
cve@mitrehttps://lists.debian.org/debian-lts-announce/2018/09/msg00029.html
cve@mitrehttps://lists.debian.org/debian-lts-announce/2021/11/msg00021.html
cve@mitrehttps://tls.mbed.org/tech-updates/releases/mbedtls-2.8.0-2.7.2-and-2.1.11-released
af854a3a-2127-422b-91ae-364da2661108https://github.com/ARMmbed/mbedtls/commit/027f84c69f4ef30c0693832a6c396ef19e563ca1
af854a3a-2127-422b-91ae-364da2661108https://github.com/ARMmbed/mbedtls/commit/a1098f81c252b317ad34ea978aea2bc47760b215
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2018/09/msg00029.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2021/11/msg00021.html
af854a3a-2127-422b-91ae-364da2661108https://tls.mbed.org/tech-updates/releases/mbedtls-2.8.0-2.7.2-and-2.1.11-released

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-125Out-of-bounds Read

Data Freshness Timeline

(refreshed 9× in last 7d / 19× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-04 13:10 UTCepss_batch
2026-06-04 13:10 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 09:28 UTCEG score recompute
2026-05-28 09:27 UTCGHSA enrichment
2026-05-27 13:38 UTCepss_batch
2026-05-27 11:13 UTCOSV refresh
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2018-9988?

CVE-2018-9988 is a high vulnerability published on April 10, 2018. ARM mbed TLS before 2.1.11, before 2.7.2, and before 2.8.0 has a buffer over-read in sslparseserverkeyexchange() that could cause a crash on invalid input.

When was CVE-2018-9988 disclosed?

CVE-2018-9988 was first published in the National Vulnerability Database on April 10, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2018-9988 actively exploited?

CVE-2018-9988 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 71.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-9988?

CVE-2018-9988 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2018-9988?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-9988, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2018-9988

Explore →

Is Your Infrastructure Affected by CVE-2018-9988?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2018-9988

📅 Published

🔄 Last Modified

🔗 References (10)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-9988?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (10)

Frequently asked(5)

Related CVEs(same CWE)