CVE-2017-8358

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-17. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2.2%CVSS: 9.8Exploit: None knownExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

LibreOffice before 2017-03-17 has an out-of-bounds write caused by a heap-based buffer overflow related to the ReadJPEG function in vcl/source/filter/jpeg/jpegc.cxx.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
49
EG Risk 49/100CISA 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
Severity98% × 45%
Exploitation2% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).
Action: An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high until it ships, then apply the release.
EPSS PROB
2.2%
EPSS %ILE
81st
KEV
Not listed

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

An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high until it ships, then apply the release.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact total (CVSS ≥ 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

April 30, 2017

Last Modified

June 17, 2026

Advisory Details (3)

Auto-updated Oct 5, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
github_commit

commit 6e6e54f944a5 (LibreOffice/core)

Fix landed in LibreOffice/core commit 6e6e54f944a5 — awaiting tagged release

https://github.com/LibreOffice/core/commit/6e6e54f944a5ebb49e9110bdeff844d00a96c56c
generic
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=889
generic

CVE-2017-8358 - PSIRT.COM

http://www.securityfocus.com/bid/98395

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 27× 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 192 total refreshes for this CVE.

  1. 2026-10-09 20:02 UTCEPSS rescore
  2. 2026-10-08 16:36 UTCEPSS rescore
  3. 2026-10-07 23:41 UTCEPSS rescore
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  40. 2026-07-23 14:15 UTCEPSS rescore
  41. 2026-07-23 01:30 UTCEG score recompute
  42. 2026-07-22 22:10 UTCEG score recompute
  43. 2026-07-22 14:04 UTCEPSS rescore
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  63. 2026-07-08 15:11 UTCEPSS rescore
  64. 2026-07-08 08:35 UTCOSV refresh
  65. 2026-07-07 13:42 UTCEPSS rescore
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  73. 2026-06-30 23:19 UTCEPSS rescore
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  75. 2026-06-29 14:03 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2017-8358?
CVE-2017-8358 is a critical vulnerability published on April 30, 2017. LibreOffice before 2017-03-17 has an out-of-bounds write caused by a heap-based buffer overflow related to the ReadJPEG function in vcl/source/filter/jpeg/jpegc.cxx.
When was CVE-2017-8358 disclosed?
CVE-2017-8358 was first published on April 30, 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-2017-8358 actively exploited?
CVE-2017-8358 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.2% probability of exploitation in the next 30 days (81st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2017-8358?
CVE-2017-8358 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2017-8358?
An upstream fix for CVE-2017-8358 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix.

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