7.8

CVE-2017-7493: debian debian_linux

Modified
AliasesUBUNTU-CVE-2017-7493DEBIAN-CVE-2017-7493
Published 17-05-2017Last modified 05-08-2024

Vulnerability summary

CVE-2017-7493 is a high (CVSS 7.8) vulnerability in debian debian_linux. EPSS estimates a 0.37% chance of exploitation in the next 30 days, higher than 30.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
0.37%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 10 · Related 7
DLA-1035-1DLA-1497-1DLA-965-1OPENSUSE-SU-2024:11287-1SUSE-SU-2017:1774-1SUSE-SU-2017:2946-1

Timeline

  1. 17-05-2017
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

Quick Emulator (Qemu) built with the VirtFS, host directory sharing via Plan 9 File System(9pfs) support, is vulnerable to an improper access control issue. It could occur while accessing virtfs metadata files in mapped-file security mode. A guest user could use this flaw to escalate their privileges inside guest.

CVSS metrics

5 scores · 3 sources · 3 versions

EPSS trend

Probability

0.37%

Chance of exploitation in the next 30 days

Percentile

31%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.37% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Debian2 products
Qemu1 product
  • qemu2.7.4 | ≤ 2.9.1
Ubuntu1 product
  • qemu< 2.0.0+dfsg-2ubuntu1.35 | < 1:2.5+dfsg-5ubuntu10.15

3 vendors · 4 products

References

10 links