CVE-2026-55577

MEDIUMPre-NVD 5.95.9
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This medium-severity CVE scores 5.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2% (12th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
5.9EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 5.9Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-51 and 7.1.2-26, a heap buffer overflow occurs in the MVG decoder that could result in an out of bounds write when processing a crafted image. This issue has been fixed in versions 6.9.13-51 and 7.1.2-26.

CVSS v3
5.9
EG Score
5.9MEDIUMmedium confidence
EG Risk
27
EG Risk 27/100

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 (value × EchelonGraph’s weight)
Severity59% × 45%
The EG Score, 5.9 of 10.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
12th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 1, 2026

Last Modified

July 2, 2026

Advisory Details (1)

Auto-updated Jul 3, 2026
Patch available. Sources: github.
GitHub advisoryMentions a patch (unverified)

Heap Buffer Overflow in ImageMagick MVG decoder · Advisory · ImageMagick/ImageMagick · GitHub

https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-wx47-rm3x-jx6p

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
imagemagick8:6.9.11.60+dfsg-1.3 ... 8:6.9.11.60+dfsg-1.3+deb11u9 (15 versions)
  • every version up to 8:6.9.11.60+dfsg-1.3+deb11u15: fixed in 8:6.9.11.60+dfsg-1.3+deb11u15
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
imagemagick8:6.9.11.60+dfsg-1.6 ... 8:6.9.11.60+dfsg-1.6+deb12u9 (12 versions)
  • every version up to 8:6.9.11.60+dfsg-1.6+deb12u12: fixed in 8:6.9.11.60+dfsg-1.6+deb12u12
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
imagemagick8:7.1.1.43+dfsg1-1 ... 8:7.1.1.43+dfsg1-1+deb13u9 (11 versions)
  • every version up to 8:7.1.1.43+dfsg1-1+deb13u11: fixed in 8:7.1.1.43+dfsg1-1+deb13u11
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
imagemagick8:7.1.1.43+dfsg1-1 ... 8:7.1.2.8+dfsg1-1 (20 versions)
  • every version up to 8:7.1.2.26+dfsg1-1: fixed in 8:7.1.2.26+dfsg1-1
—

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 32× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 137 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 37 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 19:39 UTCEG score recompute
  2. 2026-10-11 16:54 UTCEG score recompute
  3. 2026-10-11 14:17 UTCEG score recompute
  4. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  5. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  6. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  7. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  8. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  9. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  10. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  11. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  12. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  13. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  14. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  15. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  16. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  17. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  18. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  19. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  20. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  21. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  22. 2026-09-23 06:49 UTCEG score recompute
  23. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  24. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  25. 2026-09-18 06:29 UTCEG score recompute
Show 75 more
  1. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  2. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  3. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  4. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  5. 2026-09-14 00:21 UTCEG score recompute
  6. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  7. 2026-09-12 14:38 UTCEG score recompute
  8. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  9. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  10. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  11. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  12. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  13. 2026-09-06 00:45 UTCEG score recompute
  14. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  15. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  16. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  17. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  18. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  19. 2026-08-30 11:44 UTCEG score recompute
  20. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  21. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  22. 2026-08-27 22:24 UTCEG score recompute
  23. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  24. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  25. 2026-08-25 16:17 UTCEG score recompute
  26. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  27. 2026-08-24 10:50 UTCEG score recompute
  28. 2026-08-23 07:14 UTCEG score recompute
  29. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  30. 2026-08-22 06:59 UTCEG score recompute
  31. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  32. 2026-08-21 06:02 UTCEG score recompute
  33. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  34. 2026-08-20 05:48 UTCEG score recompute
  35. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  36. 2026-08-18 04:47 UTCEG score recompute
  37. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  38. 2026-08-17 01:27 UTCEG score recompute
  39. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  40. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  41. 2026-08-16 01:13 UTCEG score recompute
  42. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  43. 2026-08-14 00:43 UTCEG score recompute
  44. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  45. 2026-08-13 00:28 UTCEG score recompute
  46. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  47. 2026-08-12 00:14 UTCEG score recompute
  48. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  49. 2026-08-09 23:45 UTCEG score recompute
  50. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  51. 2026-08-08 23:31 UTCEG score recompute
  52. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  53. 2026-08-07 23:17 UTCEG score recompute
  54. 2026-08-06 23:03 UTCEG score recompute
  55. 2026-08-06 13:47 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  56. 2026-08-05 22:14 UTCEG score recompute
  57. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  58. 2026-08-04 22:00 UTCEG score recompute
  59. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  60. 2026-08-04 10:39 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  61. 2026-08-03 20:48 UTCEG score recompute
  62. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  63. 2026-08-02 20:33 UTCEG score recompute
  64. 2026-08-02 02:27 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  65. 2026-08-01 20:19 UTCEG score recompute
  66. 2026-08-01 04:16 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  67. 2026-07-30 19:14 UTCEG score recompute
  68. 2026-07-30 16:28 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  69. 2026-07-30 01:30 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  70. 2026-07-28 17:45 UTCEG score recompute
  71. 2026-07-28 15:37 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  72. 2026-07-27 15:59 UTCEG score recompute
  73. 2026-07-26 14:54 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  74. 2026-07-26 13:14 UTCEG score recompute
  75. 2026-07-25 14:18 UTCEPSS rescoreEPSS 0.2% · 13th percentile

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-55577?
CVE-2026-55577 is a medium-severity vulnerability; its CVE record was published on July 1, 2026. ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-51 and 7.1.2-26, a heap buffer overflow occurs in the MVG decoder that could result in an out of bounds write when processing a crafted image. This issue has been fixed in…
When was the CVE record for CVE-2026-55577 published?
The CVE record for CVE-2026-55577 was published on July 1, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of July 2, 2026; the record at its source may have been updated since.
Is CVE-2026-55577 actively exploited?
CVE-2026-55577 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (12th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-55577?
CVE-2026-55577 has a CVSS base score of 5.9 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-55577?
A fix for CVE-2026-55577 is available: update to the fixed version the vendor names in its advisory.

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