5.5

CVE-2020-10702: qemu Missing Cryptographic Step

Modified
AliasesUBUNTU-CVE-2020-10702DEBIAN-CVE-2020-10702
Published 04-06-2020Last modified 04-08-2024

Vulnerability summary

CVE-2020-10702 is a medium (CVSS 5.5) Missing Cryptographic Step vulnerability in qemu. EPSS estimates a 0.33% chance of exploitation in the next 30 days, higher than 26.3% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.33%
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 3 · Related 2
OPENSUSE-SU-2024:11287-1RHBA-2020:3172USN-4372-1

Timeline

  1. 04-06-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

A flaw was found in QEMU in the implementation of the Pointer Authentication (PAuth) support for ARM introduced in version 4.0 and fixed in version 5.0.0. A general failure of the signature generation process caused every PAuth-enforced pointer to be signed with the same signature. A local attacker could obtain the signature of a protected pointer and abuse this flaw to bypass PAuth protection for all programs running on QEMU.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.33%

Chance of exploitation in the next 30 days

Percentile

26%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.33% 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.

Debian1 product
  • qemu< 1:4.2-5
Qemu1 product
  • qemu≥ 4.0.0, < 5.0.0
The qemu project1 product
  • qemu≥ 4.0.0, < 5.0.0
Ubuntu1 product
  • qemu< 1:4.2-3ubuntu5

4 vendors · 4 products

References

8 links