CVE-2017-5581

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-14. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 4%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

Buffer overflow in the ModifiablePixelBuffer::fillRect function in TigerVNC before 1.7.1 allows remote servers to execute arbitrary code via an RRE message with subrectangle outside framebuffer boundaries.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
50(Track)
EG Risk 50/100SSVC: 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 computed
Severity98% × 45%
Exploitation4% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
90.0%
KEV
Not listed

Published

February 28, 2017

Last Modified

May 13, 2026

Advisory Details (9)

Auto-updated May 18, 2026
Patch available. Sources: redhat.
generic
http://rhn.redhat.com/errata/RHSA-2017-0630.html
generic

TigerVNC: Buffer overflow (GLSA 201702-19) — Gentoo security

https://security.gentoo.org/glsa/201702-19
generic

Release TigerVNC 1.7.1 · TigerVNC/tigervnc · GitHub

https://github.com/TigerVNC/tigervnc/releases/tag/v1.7.1
generic

Fix buffer overflow in ModifiablePixelBuffer::fillRect. by michalsrb · Pull Request #399 · TigerVNC/tigervnc · GitHub

https://github.com/TigerVNC/tigervnc/pull/399
generic

Fix buffer overflow in ModifiablePixelBuffer::fillRect. · TigerVNC/tigervnc@18c0201 · GitHub

https://github.com/TigerVNC/tigervnc/commit/18c020124ff1b2441f714da2017f63dba50720ba
redhat Patch Available

Affected: Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHSA-2017:2000
generic
http://www.securityfocus.com/bid/95789
generic

oss-security - Re: [tigervnc-announce] TigerVNC 1.7.1

http://www.openwall.com/lists/oss-security/2017/01/25/6
generic

oss-security - Re: [tigervnc-announce] TigerVNC 1.7.1

http://www.openwall.com/lists/oss-security/2017/01/22/1

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
redhattigervnc-0:1.8.0-1.el72017-08-01redhat
redhattigervnc-0:1.1.0-24.el62017-03-21redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

All Vendor Advisories

(2)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 14× in last 7d / 41× 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 118 total refreshes for this CVE.

  1. 2026-07-25 05:41 UTCOSV refresh
  2. 2026-07-23 14:15 UTCEPSS rescore
  3. 2026-07-23 01:29 UTCEG score recompute
  4. 2026-07-22 22:09 UTCEG score recompute
  5. 2026-07-22 14:04 UTCEPSS rescore
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  24. 2026-07-08 15:10 UTCEPSS rescore
  25. 2026-07-08 00:27 UTCOSV refresh
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  1. 2026-07-07 13:42 UTCEPSS rescore
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  8. 2026-07-02 16:54 UTCEPSS rescore
  9. 2026-07-01 15:02 UTCEPSS rescore
  10. 2026-06-30 23:19 UTCEPSS rescore
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  22. 2026-06-21 14:54 UTCEPSS rescore
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  24. 2026-06-21 01:57 UTCEPSS rescore
  25. 2026-06-21 01:57 UTCEPSS rescore
  26. 2026-06-19 12:25 UTCOSV refresh
  27. 2026-06-18 17:50 UTCEPSS rescore
  28. 2026-06-17 17:50 UTCEPSS rescore
  29. 2026-06-16 17:50 UTCEPSS rescore
  30. 2026-06-16 17:50 UTCEPSS rescore
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  44. 2026-06-04 13:10 UTCEPSS rescore
  45. 2026-06-02 20:11 UTCEPSS rescore
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  47. 2026-06-01 13:49 UTCEPSS rescore
  48. 2026-05-31 22:28 UTCEPSS rescore
  49. 2026-05-31 22:28 UTCEPSS rescore
  50. 2026-05-31 00:14 UTCEPSS rescore
  51. 2026-05-31 00:14 UTCEPSS rescore
  52. 2026-05-30 20:23 UTCOSV refresh
  53. 2026-05-29 13:41 UTCEPSS rescore
  54. 2026-05-28 13:42 UTCEPSS rescore
  55. 2026-05-28 13:42 UTCEPSS rescore
  56. 2026-05-27 13:38 UTCEPSS rescore
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  73. 2026-05-20 08:16 UTCVendor advisory
  74. 2026-05-20 08:16 UTCGHSA enrichment
  75. 2026-05-20 04:33 UTCVendor advisory

Frequently asked(5)

What is CVE-2017-5581?
CVE-2017-5581 is a critical vulnerability published on February 28, 2017. Buffer overflow in the ModifiablePixelBuffer::fillRect function in TigerVNC before 1.7.1 allows remote servers to execute arbitrary code via an RRE message with subrectangle outside framebuffer boundaries.
When was CVE-2017-5581 disclosed?
CVE-2017-5581 was first published in the National Vulnerability Database on February 28, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-5581 actively exploited?
CVE-2017-5581 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 90.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2017-5581?
CVE-2017-5581 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2017-5581?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-5581, 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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