CVE-2015-7758: Gummi 0.6.5 allows local users to write to arbitrary files via a symlink attack on a temporary dot file that u

Routine

LOW 3.3MITIGATEMITIGATEDOWNGRADE

CVE-2015-7758 is a low-severity flaw (CVSS 3.3) affecting leap, opensuse, gummi. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Gummi 0.6.5 allows local users to write to arbitrary files via a symlink attack on a temporary dot file that uses the name of an existing file and a (1) .aux, (2) .log, (3) .out, (4) .pdf, or (5) .toc extension for the file name, as demonstrated by .thesis.tex.aux.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	3.3 (Low)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 66%)
CISA exploited list	No
Weakness	CWE-59
Published	2016-01-08
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: gummi project · opensuse

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2016-01-08 19:59 UTCPublished CVE record published
2026-06-17 00:33 UTCUpdated Record last modified

opensuse leap MITIGATE

Affected: 42.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 42.1

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

opensuse opensuse MITIGATE

Affected: 13.1 · 13.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 13.1

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

gummi project gummi DOWNGRADE

Affected: 0.6.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.6.5

1. Check installed version

apt-cache policy gummi || rpm -q gummi || gummi --version

2. No fixed release: DOWNGRADE to a release before 0.6.5 (Debian / Ubuntu)

apt-cache madison gummi sudo apt install gummi=<VERSION_BEFORE_0.6.5> sudo apt-mark hold gummi

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list gummi sudo dnf downgrade gummi-<VERSION_BEFORE_0.6.5> sudo dnf versionlock add gummi

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2015-7758?

leap: mitigate or apply the listed mitigation; opensuse: mitigate or apply the listed mitigation; gummi: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2015-7758 being exploited?

CVE-2015-7758 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2015-7758 affect?

CVE-2015-7758 affects leap, opensuse, gummi. Severity is low (CVSS 3.3). Gummi 0.6.5 allows local users to write to arbitrary files via a symlink attack on a temporary dot file that uses the name of an existing file and a (1) .aux, (2) .log, (3) .out, (4) .pdf, or (5) .toc extension for the file name, as demonst

How urgent is CVE-2015-7758?

Priority 20/100. No elevated risk signals yet.

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References

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