CVE-2018-10238

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

bvlc.c in skarg BACnet Protocol Stack bacserv 0.9.1 and 0.8.5 is affected by a Buffer Overflow because of a lack of packet-size validation. The affected component is bacserv BACnet/IP BVLC forwarded NPDU. The function bvlc_bdt_forward_npdu() calls bvlc_encode_forwarded_npdu() which copies the content from the request into a local in the bvlc_bdt_forward_npdu() stack frame and clobbers the canary. The attack vector is: A BACnet/IP device with BBMD enabled based on this library connected to IP network. The fixed version is: 0.8.6.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
73.9%
KEV
Not listed

Published

April 20, 2018

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated Jun 8, 2026
No patch confirmed yet.
generic

BACnet Protocol Stack / SVN-old / Commit [r3169]

https://sourceforge.net/p/bacnet/code/3169/
generic

BACnet Protocol Stack / SVN-old / Commit [r3168]

https://sourceforge.net/p/bacnet/code/3168/

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 45× 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.

  1. 2026-07-07 13:42 UTCEPSS rescore
  2. 2026-07-06 16:24 UTCEPSS rescore
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  1. 2026-06-21 14:54 UTCEPSS rescore
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  21. 2026-06-07 15:22 UTCEPSS rescore
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  23. 2026-06-06 13:45 UTCEPSS rescore
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  38. 2026-05-29 13:41 UTCEPSS rescore
  39. 2026-05-28 13:42 UTCEPSS rescore
  40. 2026-05-28 13:42 UTCEPSS rescore
  41. 2026-05-28 08:47 UTCEG score recompute
  42. 2026-05-28 08:47 UTCGHSA enrichment
  43. 2026-05-27 13:38 UTCEPSS rescore
  44. 2026-05-27 13:38 UTCEPSS rescore
  45. 2026-05-26 13:42 UTCEPSS rescore
  46. 2026-05-26 07:17 UTCEPSS rescore
  47. 2026-05-26 07:17 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2018-10238?
CVE-2018-10238 is a critical vulnerability published on April 20, 2018. bvlc.c in skarg BACnet Protocol Stack bacserv 0.9.1 and 0.8.5 is affected by a Buffer Overflow because of a lack of packet-size validation. The affected component is bacserv BACnet/IP BVLC forwarded NPDU. The function bvlcbdtforwardnpdu() calls bvlcencodeforwardednpdu() which copies the content…
When was CVE-2018-10238 disclosed?
CVE-2018-10238 was first published in the National Vulnerability Database on April 20, 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-2018-10238 actively exploited?
CVE-2018-10238 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 73.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-10238?
CVE-2018-10238 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2018-10238?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-10238, 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.

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