CVE-2020-29394

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-24. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.9%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A buffer overflow in the dlt_filter_load function in dlt_common.c from dlt-daemon through 2.18.5 (GENIVI Diagnostic Log and Trace) allows arbitrary code execution because fscanf is misused (no limit on the number of characters to be read in the format argument).

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
40
EG Risk 40/100CISA SSVC

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 computed
Severity78% × 45%
Exploitation2% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
1.9%
EPSS %ILE
79th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

November 30, 2020

Last Modified

November 21, 2024

Advisory Details (4)

Auto-updated Sep 27, 2026
Patch available. Sources: github_pr.
generic Patch Available

[SECURITY] [DLA 3231-1] dlt-daemon security update

https://lists.debian.org/debian-lts-announce/2022/12/msg00016.html
github_pr Patch Available

fscanf() uses dynamic formatting to prevent buffer overflow

Patch available: GENIVI/dlt-daemon v2.18.9-alpha (PR #288 merged 2021-01-29)

https://github.com/GENIVI/dlt-daemon/pull/288
github_pr Patch Available

dlt_common: Fix buffer overflow in dlt_filter_load

Patch available: GENIVI/dlt-daemon v2.18.9-alpha (PR #275 merged 2020-11-30)

https://github.com/GENIVI/dlt-daemon/pull/275
generic

stack buffer overflow in dlt_filter_load · Issue #274 · COVESA/dlt-daemon · GitHub

https://github.com/GENIVI/dlt-daemon/issues/274

Affected Packages

(5 across 5 ecosystems)
Debian:10(1)
PackageVulnerable rangeFix by version rangeDependents
dlt-daemon2.18.0-1
  • every version up to 2.18.0-1+deb10u1: fixed in 2.18.0-1+deb10u1
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
dlt-daemon—
  • every version up to 2.18.5-0.3: fixed in 2.18.5-0.3
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
dlt-daemon—
  • every version up to 2.18.5-0.3: fixed in 2.18.5-0.3
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
dlt-daemon—
  • every version up to 2.18.5-0.3: fixed in 2.18.5-0.3
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
dlt-daemon—
  • every version up to 2.18.5-0.3: fixed in 2.18.5-0.3
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 25× 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.

Showing the most recent 100 of 158 total refreshes for this CVE.

  1. 2026-10-05 17:39 UTCEPSS rescore
  2. 2026-10-04 23:18 UTCEPSS rescore
  3. 2026-10-03 14:22 UTCEPSS rescore
  4. 2026-09-30 15:18 UTCEG score recompute
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  14. 2026-09-19 21:30 UTCOSV refresh
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  1. 2026-09-05 15:24 UTCEPSS rescore
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  5. 2026-09-01 03:32 UTCEPSS rescore
  6. 2026-09-01 00:34 UTCOSV refresh
  7. 2026-08-30 19:14 UTCEPSS rescore
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  9. 2026-08-27 14:21 UTCEPSS rescore
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  20. 2026-08-15 00:54 UTCOSV refresh
  21. 2026-08-13 21:57 UTCEPSS rescore
  22. 2026-08-12 13:47 UTCEPSS rescore
  23. 2026-08-09 13:43 UTCEPSS rescore
  24. 2026-08-08 16:33 UTCEPSS rescore
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  26. 2026-08-06 13:43 UTCEPSS rescore
  27. 2026-08-04 15:06 UTCEPSS rescore
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  31. 2026-07-30 16:25 UTCEPSS rescore
  32. 2026-07-30 13:44 UTCOSV refresh
  33. 2026-07-30 01:27 UTCEPSS rescore
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  39. 2026-07-23 14:15 UTCEPSS rescore
  40. 2026-07-23 01:52 UTCEG score recompute
  41. 2026-07-22 22:38 UTCEG score recompute
  42. 2026-07-22 14:05 UTCEPSS rescore
  43. 2026-07-21 15:22 UTCEPSS rescore
  44. 2026-07-21 15:22 UTCEPSS rescore
  45. 2026-07-20 17:04 UTCEPSS rescore
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  49. 2026-07-19 02:26 UTCEPSS rescore
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  51. 2026-07-16 16:59 UTCEPSS rescore
  52. 2026-07-15 16:55 UTCEPSS rescore
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  54. 2026-07-15 01:57 UTCEPSS rescore
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  59. 2026-07-12 22:38 UTCOSV refresh
  60. 2026-07-12 05:44 UTCEPSS rescore
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  63. 2026-07-09 19:07 UTCEPSS rescore
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  65. 2026-07-07 13:43 UTCEPSS rescore
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  68. 2026-07-06 02:21 UTCEPSS rescore
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  70. 2026-07-04 06:29 UTCEPSS rescore
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  72. 2026-06-30 23:20 UTCEPSS rescore
  73. 2026-06-30 23:20 UTCEPSS rescore
  74. 2026-06-29 14:04 UTCEPSS rescore
  75. 2026-06-28 04:54 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2020-29394?
CVE-2020-29394 is a high vulnerability published on November 30, 2020. A buffer overflow in the dltfilterload function in dlt_common.c from dlt-daemon through 2.18.5 (GENIVI Diagnostic Log and Trace) allows arbitrary code execution because fscanf is misused (no limit on the number of characters to be read in the format argument).
When was CVE-2020-29394 disclosed?
CVE-2020-29394 was first published on November 30, 2020, 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-2020-29394 actively exploited?
CVE-2020-29394 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.9% probability of exploitation in the next 30 days (79th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2020-29394?
CVE-2020-29394 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2020-29394?
A fix for CVE-2020-29394 is available: update to the fixed version the vendor names in its advisory.

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