CVE-2013-0335

HIGHPre-NVD 7.67.6
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 7.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 2.1% (82nd percentile of EPSS-scored CVEs). GitHub Security Advisory CVSS 6.5 is lower than this score; a lower GitHub score revises it only when its advisory is newer than the CVE record's last change, and this advisory (published 2022-05-05) is not newer than that change (2026-07-31), so it does not.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 4 sources updated this week

Also known asEUVD-2013-0022 (ENISA EUVD) · GHSA-qfp8-hfqx-c79c (GitHub Security Advisories)Source: ENISA EUVD

7.6EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2.1%CVSS: 7.6Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

OpenStack Compute (Nova) Grizzly, Folsom (2012.2), and Essex (2012.1) allows remote authenticated users to gain access to a VM in opportunistic circumstances by using the VNC token for a deleted VM that was bound to the same VNC port.

CVSS v3
7.6
EG Score
7.6HIGHmedium confidence
EG Risk
35
EG Risk 35/100

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)
Severity76% × 45%
Impact severity (EG Severity): CVSS 7.6 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation2.1% × 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
2.1%
EPSS %ILE
82nd
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 (7.6): severity, escalated by confirmed exploitation. This CVE's 7.6 is its impact severity (EG Severity), not escalated.

EG Severity
7.6 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
2.1% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). 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: 14 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 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.

The score's inputs: 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

March 22, 2013

Last Modified

July 31, 2026

Advisory Details (6)

Auto-updated Jul 31, 2026
Patch available. Sources: redhat, github.
GitHub advisoryMentions a patch (unverified)

OpenStack Compute Nova Unauthorised access to arbitrary VM using VNC token from deleted VM · CVE-2013-0335 · GitHub Advisory Database · GitHub

https://github.com/advisories/GHSA-qfp8-hfqx-c79c
Web page

Bug #1125378 “[OSSA-2013-006] VNC proxy can be made to connect t...” : Bugs : OpenStack Compute (nova)

https://bugs.launchpad.net/nova/+bug/1125378
Red HatMentions a patch (unverified)

cve-details

https://access.redhat.com/security/cve/CVE-2013-0335
Red HatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2013:0709
Web page

oss-security - [OSSA-2013-006] VNC proxy can connect to the wrong VM (CVE-2013-0335)

http://www.openwall.com/lists/oss-security/2013/02/26/7

Vendor Advisories for CVE-2013-0335(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
ubuntupython-nova (2012.2.1+stable-20121212-a99a802e-0ubuntu1.4) @ quantal2026-10-29ubuntu
redhatopenstack-nova-0:2012.2.3-7.el6ost2013-04-04redhat
pipNova @ 12.0.0a0 (fixes < 12.0.0a0)—ghsa

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

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
nova—
  • every version up to 2012.1.1-14: fixed in 2012.1.1-14
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
nova—
  • every version up to 2012.1.1-14: fixed in 2012.1.1-14
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
nova—
  • every version up to 2012.1.1-14: fixed in 2012.1.1-14
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
nova—
  • every version up to 2012.1.1-14: fixed in 2012.1.1-14
—
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
nova—
  • every version up to 12.0.0a0: fixed in 12.0.0a0
—

Weakness Classification(3)

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

Additional Vendor Advisories

(1)

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 11× in last 7d / 40× 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 96 of 180 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. 4 repeat rows among the latest 100 are merged into the row they repeat. The 84 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 16:27 UTCEPSS rescoreEPSS 2.1% · 82nd percentile
  2. 2026-11-01 08:50 UTCGHSA enrichmentGHSA-qfp8-hfqx-c79c · GitHub severity HIGH · GitHub CVSS 6.5
  3. 2026-11-01 08:50 UTCEG score recompute
  4. 2026-10-31 16:26 UTCEPSS rescoreEPSS 2.1% · 82nd percentile
  5. 2026-10-30 16:27 UTCEPSS rescoreEPSS 2.1% · 82nd percentile
  6. 2026-10-29 17:04 UTCEG score recompute
  7. 2026-10-29 17:04 UTCVendor advisory
  8. 2026-10-29 16:26 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  9. 2026-10-28 16:26 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  10. 2026-10-27 16:26 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  11. 2026-10-26 16:25 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  12. 2026-10-25 20:10 UTCEG score recompute
  13. 2026-10-25 16:26 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  14. 2026-10-24 16:27 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  15. 2026-10-23 16:26 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  16. 2026-10-22 16:26 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  17. 2026-10-22 10:47 UTCEG score recompute
  18. 2026-10-22 10:47 UTCVendor advisory
  19. 2026-10-21 16:26 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  20. 2026-10-20 16:26 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  21. 2026-10-19 16:26 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  22. 2026-10-18 16:26 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  23. 2026-10-18 11:22 UTCEG score recompute
  24. 2026-10-17 16:26 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  25. 2026-10-16 16:26 UTCEPSS rescoreEPSS 2.1% · 81st percentile
Show 71 more
  1. 2026-10-15 16:26 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  2. 2026-10-14 16:26 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  3. 2026-10-13 16:26 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  4. 2026-10-12 21:27 UTCEG score recompute
  5. 2026-10-12 16:27 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  6. 2026-10-12 01:34 UTCEG score recompute
  7. 2026-10-11 13:39 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  8. 2026-10-10 19:54 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  9. 2026-10-10 11:03 UTCOSV refresh
  10. 2026-10-09 20:00 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  11. 2026-10-08 16:34 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  12. 2026-10-07 23:39 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  13. 2026-10-06 15:10 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  14. 2026-10-05 17:38 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  15. 2026-10-04 23:16 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  16. 2026-09-30 14:58 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  17. 2026-09-29 08:34 UTCEG score recompute
  18. 2026-09-27 13:39 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  19. 2026-09-26 15:52 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  20. 2026-09-24 13:57 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  21. 2026-09-20 20:56 UTCOSV refresh
  22. 2026-09-20 20:08 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  23. 2026-09-18 19:21 UTCEPSS rescoreEPSS 2.1% · 81st percentile
  24. 2026-09-15 03:04 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  25. 2026-09-13 16:40 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  26. 2026-09-12 14:55 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  27. 2026-09-11 09:30 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  28. 2026-09-07 15:56 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  29. 2026-09-06 13:42 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  30. 2026-09-05 15:22 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  31. 2026-09-04 13:55 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  32. 2026-09-02 14:06 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  33. 2026-09-01 20:27 UTCOSV refresh
  34. 2026-09-01 13:47 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  35. 2026-08-27 14:20 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  36. 2026-08-26 14:40 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  37. 2026-08-25 13:43 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  38. 2026-08-24 07:23 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  39. 2026-08-21 23:44 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  40. 2026-08-20 22:50 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  41. 2026-08-19 16:59 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  42. 2026-08-18 13:42 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  43. 2026-08-16 02:09 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  44. 2026-08-15 22:07 UTCOSV refresh
  45. 2026-08-15 01:25 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  46. 2026-08-12 13:45 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  47. 2026-08-09 13:42 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  48. 2026-08-08 16:31 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  49. 2026-08-07 16:21 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  50. 2026-08-06 13:42 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  51. 2026-08-05 19:12 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  52. 2026-08-04 15:04 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  53. 2026-08-02 02:22 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  54. 2026-07-31 15:27 UTCEG score recompute
  55. 2026-07-31 14:51 UTCEG score recompute▲ 1.60
  56. 2026-07-31 14:48 UTCMITRE cvelistV5CVSS v3 → 7.6 · severity → HIGH
  57. 2026-07-30 01:26 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  58. 2026-07-28 15:31 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  59. 2026-07-26 13:47 UTCEG score recomputeFirst assessed: 6.0 MEDIUM
  60. 2026-07-25 14:12 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  61. 2026-07-23 14:14 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  62. 2026-07-23 01:09 UTCEG score recompute
  63. 2026-07-23 00:12 UTCEG score recompute
  64. 2026-07-22 21:51 UTCEG score recompute
  65. 2026-07-22 14:04 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  66. 2026-07-22 13:48 UTCOSV refresh
  67. 2026-07-21 15:21 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  68. 2026-07-20 17:03 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  69. 2026-07-19 14:27 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  70. 2026-07-19 02:25 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  71. 2026-07-18 10:00 UTCEPSS rescoreEPSS 2.1% · 80th percentile

Frequently asked(5)

What is CVE-2013-0335?
CVE-2013-0335 is a high-severity vulnerability; its CVE record was published on March 22, 2013. OpenStack Compute (Nova) Grizzly, Folsom (2012.2), and Essex (2012.1) allows remote authenticated users to gain access to a VM in opportunistic circumstances by using the VNC token for a deleted VM that was bound to the same VNC port.
When was CVE-2013-0335 made public?
CVE-2013-0335 was made public on March 22, 2013: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on March 22, 2013. EchelonGraph's copy of the record carries a last-modified date of July 31, 2026; the record at its source may have been updated since.
Is CVE-2013-0335 actively exploited?
CVE-2013-0335 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.1% probability of exploitation in the next 30 days (82nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2013-0335?
CVE-2013-0335 has a CVSS base score of 7.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2013-0335?
A fix for CVE-2013-0335 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2013-0335 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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