An integer overflow can occur in NTP-dev.4.3.70 leading to an out-of-bounds memory copy operation when processing a specially crafted private mode packet. The crafted packet needs to have the correct message authentication code and a valid timestamp. When processed by the NTP daemon, it leads to an immediate crash.
CVE-2015-7848
HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence
Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-17. NVD baseline CVSS 7.5; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: ghsa, nvd
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 6%CVSS: 7.5Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EG Risk
- 38(Track)EG Risk 38/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity75% × 45%Exploitation0% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 6%
- EPSS %ILE
- 93%
- KEV
- Not listed
Published
January 6, 2017
Last Modified
June 17, 2026
References (10)
- cve@mitrehttp://www.securityfocus.com/bid/77275
- cve@mitrehttp://www.securitytracker.com/id/1033951
- cve@mitrehttp://www.talosintelligence.com/reports/TALOS-2015-0052/
- cve@mitrehttps://security.gentoo.org/glsa/201607-15
- cve@mitrehttps://security.netapp.com/advisory/ntap-20171004-0001/
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/77275
- af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1033951
- af854a3a-2127-422b-91ae-364da2661108http://www.talosintelligence.com/reports/TALOS-2015-0052/
- af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/201607-15
- af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20171004-0001/
Affected Packages
(1 across 1 ecosystem)
Debian:11(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| ntp | — | 1:4.2.8p4+dfsg-1 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 6× in last 7d / 23× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-08-21 23:44 UTCEPSS rescore
- 2026-08-20 22:50 UTCEPSS rescore
- 2026-08-19 16:59 UTCEPSS rescore
- 2026-08-18 13:43 UTCEPSS rescore
- 2026-08-16 14:51 UTCEPSS rescore
- 2026-08-16 02:09 UTCEPSS rescore
- 2026-08-15 01:25 UTCEPSS rescore
- 2026-08-12 13:46 UTCEPSS rescore
- 2026-08-12 07:17 UTCOSV refresh
- 2026-08-11 13:36 UTCEPSS rescore
- 2026-08-09 13:42 UTCEPSS rescore
- 2026-08-08 16:32 UTCEPSS rescore
- 2026-08-07 16:22 UTCEPSS rescore
- 2026-08-06 13:42 UTCEPSS rescore
- 2026-08-05 19:12 UTCEPSS rescore
- 2026-08-04 15:04 UTCEPSS rescore
- 2026-08-04 10:31 UTCEPSS rescore
- 2026-08-01 04:11 UTCEPSS rescore
- 2026-07-30 01:26 UTCEPSS rescore
- 2026-07-30 01:26 UTCEPSS rescore
- 2026-07-28 15:31 UTCEPSS rescore
- 2026-07-27 12:57 UTCEG score recompute
- 2026-07-27 12:57 UTCGHSA enrichment
Related CVEs(same CWE)
Same CWE
10 shownCWE-190
Frequently asked(5)
What is CVE-2015-7848?
CVE-2015-7848 is a high vulnerability published on January 6, 2017. An integer overflow can occur in NTP-dev.4.3.70 leading to an out-of-bounds memory copy operation when processing a specially crafted private mode packet. The crafted packet needs to have the correct message authentication code and a valid timestamp. When processed by the NTP daemon, it leads to an…
When was CVE-2015-7848 disclosed?
CVE-2015-7848 was first published in the National Vulnerability Database on January 6, 2017, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-7848 actively exploited?
CVE-2015-7848 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 6% probability of exploitation in the next 30 days, which ranks it in the top 7.1% of all scored CVEs.
What is the CVSS score of CVE-2015-7848?
CVE-2015-7848 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2015-7848?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-7848, 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-2015-7848
Is Your Infrastructure Affected by CVE-2015-7848?
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