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Fencer Vulns
medium 6.1

CVE-2020-35494 json

There's a flaw in binutils /opcodes/tic4x-dis.c.

published 2021-01-04 5 y ago modified 2026-10-08 31 d ago also EUVD-2020-23163

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits
0
none known

Summary

There's a flaw in binutils /opcodes/tic4x-dis.c. An attacker who is able to submit a crafted input file to be processed by binutils could cause usage of uninitialized memory. The highest threat is to application availability with a lower threat to data confidentiality. This flaw affects binutils versions prior to 2.34.

Patch / fix

  • gnu binutils 2.34
  • binutils Debian 14, Debian 13, Debian 12 2.33.50.20200107-1

debian advisories DEBIAN-CVE-2020-35494

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-35494 updated cvss 6.1

binutils: usage of unitialized heap in tic4x_print_cond function in opcodes/tic4x-dis.c

  • Red Hat Enterprise Linux 6 binutils Red Hat Enterprise Linux 7 binutils
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 binutils, gcc-toolset-9-binutils
    affected: no fix available “Fix deferred”
  • Red Hat Enterprise Linux 8 gcc-toolset-10-binutils Red Hat Enterprise Linux 9 binutils, binutils-gold
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
31 d ago

Exploit prediction

1.13% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=1911439 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 6.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:P/I:N/A:P

Affected products

  • n/a binutils

Classification

Weakness
  • CWE-908 Use of Uninitialized Resource

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.