CVE-2018-1157

MEDIUMNVD 6.56.5—Trending — 3 sources updated this week

6.5

Mikrotik RouterOS before 6.42.7 and 6.40.9 is vulnerable to a memory exhaustion vulnerability. An authenticated remote attacker can crash the HTTP server and in some circumstances reboot the system via a crafted HTTP POST request.

CVSS v3: 6.5
EG Score: 6.5(medium)
EPSS: 85.2%
KEV: Not listed

Published

August 23, 2018

Last Modified

November 21, 2024

References (8)

vulnreport@tenablehttp://seclists.org/fulldisclosure/2019/Jul/20
vulnreport@tenablehttps://mikrotik.com/download/changelogs
vulnreport@tenablehttps://mikrotik.com/download/changelogs/bugfix-release-tree
vulnreport@tenablehttps://www.tenable.com/security/research/tra-2018-21
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2019/Jul/20
af854a3a-2127-422b-91ae-364da2661108https://mikrotik.com/download/changelogs
af854a3a-2127-422b-91ae-364da2661108https://mikrotik.com/download/changelogs/bugfix-release-tree
af854a3a-2127-422b-91ae-364da2661108https://www.tenable.com/security/research/tra-2018-21

Weakness Classification(1)

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

CWE-400Uncontrolled Resource Consumption (Denial of Service)

Data Freshness Timeline

(refreshed 12× in last 7d / 18× 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.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 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 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 03:50 UTCEG score recompute
2026-05-28 03:50 UTCGHSA enrichment
2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
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-2018-1157?

CVE-2018-1157 is a medium vulnerability published on August 23, 2018. Mikrotik RouterOS before 6.42.7 and 6.40.9 is vulnerable to a memory exhaustion vulnerability. An authenticated remote attacker can crash the HTTP server and in some circumstances reboot the system via a crafted HTTP POST request.

When was CVE-2018-1157 disclosed?

CVE-2018-1157 was first published in the National Vulnerability Database on August 23, 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-2018-1157 actively exploited?

CVE-2018-1157 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 85.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-1157?

CVE-2018-1157 has a CVSS v3 base score of 6.5 (NVD).

How do I remediate CVE-2018-1157?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-1157, 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

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CVE-2018-1157

📅 Published

🔄 Last Modified

🔗 References (8)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-1157?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (8)

Frequently asked(5)

Related CVEs(same CWE)