CVE-2025-64503

LOWNVD 3.33.3
EchelonGraph scoreMEDIUM confidence

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

This low-severity CVE scores 3.3 under NVD CVSS v3. EPSS exploit probability: 0.2% (13th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Elevated

Also known asEUVD-2025-150365 (ENISA EUVD)Source: ENISA EUVD

3.3EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 3.3Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

cups-filters contains backends, filters, and other software required to get the cups printing service working on operating systems other than macos. In cups-filters prior to 1.28.18, by crafting a PDF file with a large MediaBox value, an attacker can cause CUPS-Filter 1.x’s pdftoraster tool to write beyond the bounds of an array. First, a PDF with a large MediaBox width value causes header.cupsWidth to become large. Next, the calculation of bytesPerLine = (header.cupsBitsPerPixel * header.cupsWidth + 7) / 8 overflows, resulting in a small value. Then, lineBuf is allocated with the small bytesPerLine size. Finally, convertLineChunked calls writePixel8, which attempts to write to lineBuf outside of its buffer size (out of bounds write). In libcupsfilters, the maintainers found the same bytesPerLine multiplication without overflow check, but the provided test case does not cause an overflow there, because the values are different. Commit 50d94ca0f2fa6177613c97c59791bde568631865 contains a patch, which is incorporated into cups-filters version 1.28.18.

CVSS v3
3.3
EG Score
3.3LOWmedium confidence
EG Risk
31
EG Risk 31/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity33% × 45%
Impact severity (EG Severity): CVSS 3.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (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
13th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (3.3): severity, escalated by confirmed exploitation. This CVE's 3.3 is its impact severity (EG Severity), not escalated.

EG Severity
3.3 LOWCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-24). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

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 public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (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)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). 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

November 12, 2025

Last Modified

October 18, 2026

References (6)

Vendor Advisories for CVE-2025-64503(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(3)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntucups-filters-core-drivers (2.0.1-0ubuntu3.25.10.1) @ questing2026-05-29ubuntu
ubuntulibcupsfilters2t64 (2.1.1-0ubuntu2.1) @ plucky2026-05-29ubuntu
redhatcups-main-2.4.17-1.hum12026-04-17redhat

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.

Affected Packages

(6 across 4 ecosystems)
Debian:13(2)
PackageVulnerable rangeFix by version rangeDependents
cups-filters1.28.17-6
  • every version up to 1.28.17-6+deb13u1: fixed in 1.28.17-6+deb13u1
—
libcupsfilters2.0.0-3
  • every version up to 2.0.0-3+deb13u1: fixed in 2.0.0-3+deb13u1
—
Debian:14(2)
PackageVulnerable rangeFix by version rangeDependents
cups-filters1.28.17-6
  • every version up to 1.28.17-7: fixed in 1.28.17-7
—
libcupsfilters2.0.0-3, 2.1.1-1
  • every version up to 2.1.1-2: fixed in 2.1.1-2
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
cups-filters1.28.7-1, 1.28.7-1+deb11u1, 1.28.7-1+deb11u2, 1.28.7-1+deb11u3
  • every version up to 1.28.7-1+deb11u4: fixed in 1.28.7-1+deb11u4
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
cups-filters1.28.17-3, 1.28.17-3+deb12u1
  • every version up to 1.28.17-3+deb12u2: fixed in 1.28.17-3+deb12u2
—

Weakness Classification(1)

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

Additional Vendor Advisories

(2)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 8× in last 7d / 39× 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 95 of 198 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. 5 repeat rows among the latest 100 are merged into the row they repeat. The 103 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

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

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2025-64503?
CVE-2025-64503 is a low-severity vulnerability; its CVE record was published on November 12, 2025. cups-filters contains backends, filters, and other software required to get the cups printing service working on operating systems other than macos. In cups-filters prior to 1.28.18, by crafting a PDF file with a large MediaBox value, an attacker can cause CUPS-Filter 1.x’s pdftoraster tool to…
When was the CVE record for CVE-2025-64503 published?
The CVE record for CVE-2025-64503 was published on November 12, 2025. 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 October 18, 2026; the record at its source may have been updated since.
Is CVE-2025-64503 actively exploited?
CVE-2025-64503 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (13th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-64503?
CVE-2025-64503 has a CVSS v3 base score of 3.3 (NVD).
How do I remediate CVE-2025-64503?
A fix for CVE-2025-64503 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2025-64503 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-64503

Explore →

Is Your Infrastructure Affected by CVE-2025-64503?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs